Pinterest is

Pinterest is a virtual pinboard where you can not post photos or images that can be inserted into the categories (like album or folder) that can be customized name. Such category of 'food and drink' which contains photos and pictures of the food and drinks you like. You can also memfollow another account and re-pin pin belongs to another account (such as a retweet on Twitter) without having to follow the owner pinboard. Well if you do not have a Pinterest account, you can follow a short tutorial about creating an account Pinterest and use it below.

Open the website Pinterest here. Click the Request an invite. Then you will be asked to enter an email address. Some time or up to 1 × 24 hour request for invitation Pinterest account you will be entered into the email. Can be checked in the inbox or spam email. Furthermore, activation of your Pinterest account, fill in the fields such as bio-data and Pinterest account can be used.

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Twitter is

Twitter is a website owned and operated by Twitter Inc.., Which offers a social networking micro-blogging that allows users to send and read messages called chirp (tweets). Tweets are text posts of up to 140 characters displayed on the user profile page. Tweets can be seen outside, but senders can restrict message delivery to their friends list only. Users can see other writers chirp known as followers ("followers").

All users can send and receive chirp via the Twitter website, compatible external applications (cell phones), or with a short message (SMS) available in certain countries. The site is based in San Bruno, California near San Francisco, where the site was first made. Twitter also has servers and offices in San Antonio, Texas and Boston, Massachusetts.

Since its creation in 2006 by Jack Dorsey, Twitter has gained popularity worldwide and currently has more than 100 million users. It is sometimes described as the "SMS of the Internet".

Twitter has a logo in the form of a blue bird named "Larry the" Bird ", named after a former NBA basketball player, Larry Bird.

Twitter started with a discussion held by board members of the podcasting company Odeo. During the meeting, Jack Dorsey introduced the idea of ​​twitter in which individuals can use the SMS service to communicate with a small group. This project began on 21 publicly on July 15, 2006. Twitter became its own company in April 2007.

Twitter popularity began to rise in 2007 when there were festival South by Southwest (SXSW). During the last event, Twitter usage increased from 20,000 per day to 60,000 chirp. Reaction at the festival was very positive.

On 14 September 2010, Twitter change the logo and launched a new design and logo changed again to "Larry the" Bird "on June 5, 2012.

source : http://id.wikipedia.org/wiki/Twitter

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Facebook is

Facebook is a social networking service and website launched in February 2004 that is owned and operated by Facebook, Inc..  In May 2012, Facebook has more than 900 million active users, more than half of them using mobile devices.  Users must register before using this site. After that, the user can create a personal profile, add other users as friends and exchange messages, including automatic notifications when they update their profile. Additionally, users can join a group of users with the same interests, sorted by workplace, school or college, or other characteristics, and categorize their friends into lists such as "Colleague" or "Close Friends". The service name is derived from the name of books given to students in the first academic year by some university administrations in the United States with the goal of helping students get to know one another. Facebook allows anyone at least 13 years old to be a registered user of this site. 

Facebook was founded by Mark Zuckerberg with his roommates and fellow computer science students Eduardo Saverin, Dustin Moskovitz and Chris Hughes.  Membership website was originally limited to Harvard students only, then expanded to other colleges in the Boston, Ivy League, and Stanford University . This site is slowly opening up to students at other universities before opening to high school students, and eventually to all persons at least 13 years. Even so, according to the Consumer Reports survey in May 2011, there were 7.5 million children under the age of 13 years who have Facebook accounts and 5 million under 10 years old, so it violates the site's terms of service.

In January 2009 Compete.com study puts Facebook as a social networking service most widely used by number of monthly active users worldwide.  Entertainment Weekly put it on my list of "best" end of the decade with the comment, "How can we stalk our ex-lover , remember our co-workers birthday, teasing us and playing Scrabulous before Facebook was created? " Quantcast estimates Facebook has 138.9 million monthly visitors in the U.S. in May 2011.  According to Social Media Today in April 2010, approximately 41.6% of the U.S. population has a Facebook account. Even so, the Facebook market growth started to fall in some areas with the loss of 7 million active users in the United States and Canada in May 2011.

source : http://id.wikipedia.org/wiki/Facebook

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