Twitter

Twitter is a website, owned and operated by Twitter Inc., which offers a social networking and microblogging service, enabling its users to send and read messages called tweets. Tweets are text-based posts of up to 140 characters displayed on the user's profile page. Tweets are publicly visible by default; however, senders can restrict message delivery to just their followers. Users may subscribe to other users' tweets – this is known as following and subscribers are known as followers or tweeps (Twitter + peeps).

                                                                                                                All users can send and receive tweets via the Twitter website, compatible external applications (such as for smartphones), or by Short Message Service(SMS) available in certain countries. While the service is free, accessing it through SMS may incur phone service provider fees. The website is based inSan Francisco, California. Twitter also has servers and offices in San Antonio, Texas; and Boston, Massachusetts. Twitter, Inc. was originally incorporated in California, but as of 2007 is incorporated in the jurisdiction of Delaware.

Twitter was created in March 2006 by Jack Dorsey and launched in July. Since then Twitter has gained popularity worldwide and is estimated to have 200 million users, generating 65 million tweets a day and handling over 800,000 search queries per day. It is sometimes described as the "SMS of the Internet".

Facebook

Facebook

facebook?? i don't know anything about it

one that i know about facebook is a social network for people.

But..
Facebook (stylized facebook) is a social networking service and website launched in February 2004, operated and privately owned by Facebook, Inc.As of January 2011, Facebook has more than 600 million active users. Users may create a personal profile, add other users as friends, and exchange messages, including automatic notifications when they update their profile. Additionally, users may join common interest user groups, organized by workplace, school or college, or other characteristics. The name of the service stems from the colloquial name for the book given to students at the start of the academic year by university administrations in the United States to help students get to know each other better. Facebook allows anyone who declares themselves to be at least 13 years old to become a registered user of the website.

Facebook was founded by Mark Zuckerberg with his college roommates and fellow computer science students Eduardo Saverin, Dustin Moskovitz andChris Hughes. The website's membership was initially limited by the founders to Harvard students, but was expanded to other colleges in the Bostonarea, the Ivy League, and Stanford University. It gradually added support for students at various other universities before opening to high school students, and, finally, to anyone aged 13 and over.

A January 2009 Compete.com study ranked Facebook as the most used social networking service by worldwide monthly active users, followed by MySpace. Entertainment Weekly included the site on its end-of-the-decade "best-of" list, saying, "How on earth did we stalk our exes, remember our co-workers' birthdays, bug our friends, and play a rousing game of Scrabulous before Facebook?" Quantcast estimates Facebook has 135.1 million monthly unique U.S. visitors in October 2010. According to Social Media Today, in April 2010 an estimated 41.6% of the U.S. population had a Facebook account.

Anime

Digimon Tamer

Anime is commonly defined as animation originating in Japan. (アニメ, an abbreviated pronunciation in Japanese of "animation", pronounced in Japanese, but typically or /ˈænɨmə/ in English.) The definition sometimes changes depending on the context. In English-speaking countries, animeis also referred to as "Japanese animation".

While the earliest known Japanese animation dates to 1917, and many original Japanese cartoons were produced in the ensuing decades, the characteristic anime style developed in the 1960s—notably with the work of Osamu Tezuka—and became known outside Japan in the 1980s.

Anime, like manga, has a large audience in Japan and recognition throughout the world. Distributors can release anime via television broadcasts, directly to video, or theatrically, as well as online.

Keroro Gunso

Both hand-drawn and computer-animated anime exist. It is used in television series, films, video, video games, commercials, and internet-based releases, and represents most, if not all, genres of fiction. Anime gained early popularity in East and Southeast Asia and also attained popularity in various communities throughout the world.