Facebook

Facebook is a popular free social networking website that allows registered users to create profiles, upload photos and
video, send messages and keep in touch with friends, family and colleagues. The site, which is available in 37 different
languages, includes public features such as:
- Marketplace - allows members to post, read and respond to classified ads. Groups - allows members who have common interests to find each other and interact.
- Events - allows members to publicize an event, invite guests and track who plans to attend.
- Pages - allows members to create and promote a public page built around a specific topic.
- Presence technology - allows members to see which contacts are online and chat.
Within each member's personal profile, there are several key networking components. The most popular is arguably the Wall, which is essentially a virtual bulletin board. Messages left on a member's Wall can be text, video or photos. Another popular component is the virtual Photo Album. Photos can be uploaded from the desktop or directly from a smartphone camera. There is no limitation on quantity, but Facebook staff will remove inappropriate or copyrighted images. An interactive album feature allows the member's contacts (who are called generically called "friends") to comment on each other's photos and identify (tag) people in the photos. Another popular profile component is status updates, a microblogging feature that allows members to broadcast short Twitter-like announcements to their friends. All interactions are published in a news feed, which is distributed in real-time to the member's friends.Facebook offers a range of privacy options to its members. A member can make all his communications visible to everyone,he can block specific connections or he can keep all his communications private. Members can choose whether or not to be searchable, decide which parts of their profile are public,decide what not to put in their news feed and determine exactly who can see their posts. For those members who wish to use Facebook to communicate privately, there is a message feature, which closely resembles email
YouTube
YouTube gives you 5000 characters to play with in the description box, and so why not use some. There really is no excuse for neglecting this field when it often takes just a few minutes to write copy that will not only benefit the viewer, but will also give YouTube some much needed extra information about your video content. A well thought-out description will help with video SEO and will give the viewer an outline of the content -leading to a longer watch time, and, hopefully, more Engagement.
The description field on the YouTube watch page helps the viewer - as well as YouTube itself - understand what your video is about. Only around 157 characters are shown on the watch page above the 'Show More' button, so it makes sense to confirm the content of the video here. Think of it as an ad that will entice the viewer into watching. YouTube gives creators 5000 characters to use in this field, but the first couple of sentences are hugely important because they will be pulled through and used as meta data.
Instagram

Today Facebook bought Instagram —an app that lets you take photos, make them look amazing and post them online from your phone– for a staggering 1 billion dollars. Instagram was already becoming one of the most popular communities on the web, garnering an impressive 30 million users in just 15 months. Now, with the new Facebook integration, literally everyone is going to be on there.
Since its growing so fast, you can no longer ignore Instagram as an essential tool for growing your online reputation and personal brand, but only if you understand the ins and outs first as well as some of Instagrams biggest shortfalls.
Well, it’s not just a way to share your pictures on Facebook or Twitter; it’s a powerful tool that literally puts some of the tools that professional photographers use onto your iPhone or Android. You just snap a photo with your phone and then choose from more than a dozen filters.
Twitter

Twitter (/ˈtwɪtər/ ) is an online social networking service that enables users to send and read short 140- character messages called "tweets". Registered users can read and post tweets, but those who are unregistered can only read them. Users access Twitter through the website interface, SMS or mobile device app.Twitter Inc. is based in San Francisco and has more than 25 offices around the world.Twitter was created in March 2006 by Jack Dorsey, Evan Williams, Biz Stone , and Noah Glass and launched in July 2006. The service rapidly gained worldwide popularity, with more than 100 million users posting 340 million tweets a day in 2012.The service also handled 1.6 billion search queries per day.In 2013, it was one of the ten most-visited websites and has been described as the SMS of the Internet.As of March 2016, Twitter has more 310 million monthly active.
Reddit

Reddit is a social media, social news aggregation, web content rating , and discussion website. Reddit's registered community members can submit content, such as text posts or direct links. Registered users can then vote submissions up or down to organize the posts and determine their position on the site's pages. The submissions with the most positive votes appear on the front page or the top of a category. Content entries are organized by areas of interest called "subreddits". The subreddit topics include news,science, gaming, movies, music, books, fitness, food, and image-sharing, among many others.As of 2016, Reddit had 542 million monthly visitors (234 million unique users), ranking #11 most visited web-site in US and #25 in the world. Across 2015, Reddit saw 82.54 billion pageviews, 73.15 million submissions, 725.85 million comments, and 6.89 billion upvotes from its users.
vine

Vine is a short-form video sharing service where users can share six-second-long looping video clips . The service was founded in June 2012, and American microblogging website Twitter acquired it in October 2012, just before its official launch. Users' videos are published through Vine's social network and can be shared on other services such as Facebook and Twitter. Vine's app can also be used to browse through videos posted by other users, along with groups of videos by theme, and trending, or popular, videos. While Vine enjoys the support of Twitter, it competes with others such as Instagram and Mobli As of December 2015 Vine has 20 million active users.
ASKfm
site was founded in Latvia and launched on June 16, 2010, as a rival to Formspring . It has since overtaken the latter in terms of worldwide traffic generated with 150million monthly unique users as of March 2015. The site was purchased by Ask.com in August 2014 with the intention to "focus on turning around the philosophy of the company and putting trust and safety first." Since the acquisition, the company has made a number of changes toward its goal of improving the safety of its users.These include parting ways with ASKfm founders, Mark and Ilja Terebin, whom Ask.com CEO Doug Leeds described ashaving a "laissez-faire" approach to safety and proactivelypartnering with the New York Attorney General and the Maryland Attorney General in the creation of a multi-steplan to turn the site around. ASKfm has since launched its first-ever Safety Advisory Board of which John Carr OBE, Anne Collier, Marsali Hancock, Brian O'Neill and Justin Patchin are board members, as well as a new Safety Center which includes specific tools, tips and guidance for teens, teachers,parents and law enforcement. In February 2015, under the direction of Chief Trust and Safety Officer Catherine Teitelbaum, ASKfm sponsored its first Safer Internet Day and launched a #nobullies campaign to drive awareness of the company's no tolerance policy for abusive behavior on the ASKfm service.
tumbler
Development of began in 2006 during a two-week gap between contracts at David Karp 's software consulting company, Davidville (housed at Karp's former internship with producer/incubator Fred Seibert's Frederator Studios was located a block from Tumblr's current headquarters). Karp had been interested in tumblelogs short-form blogsfor some time and was waiting for one of the established
blogging platforms to introduce their own tumblelogging platform. As no one had done so after a year of waiting, Karp
and developer Marco Arment began working on their own tumblelogging platform. Tumblr was launched in
February 2007 and within two weeks, the service had gained 75,000 users. Arment left the company in September 2010 to focus on Instapaper.
Google+
Google+ is the company's fourth foray into social networking,following Google Buzz ,Google Friend Connect (launched 2008, retired by March 1,2012), and Orkut (launched in 2004, as of 2013 operated entirely by subsidiary Google Brazil – retired in September 2014 Google+ launched in June 2011. Features included the ability to post photos and status updates to the stream or interest based communities, group different types of relationships(rather than simply "friends") into Circles, a multi-person instant messaging, text and video chat called Hangouts,events, location tagging, and the ability to edit and upload photos to private cloud-based albums
According to a 2016 book by a former Facebook employee, some leaders at Facebook saw Google's foray into social networking as a serious threat to the company. Facebook founder Mark Zuckerberg instituted a company-wide "lockdown", signaling that employees were supposed to dedicate time to bringing Facebook's features into line with Google+