JUST LOVE FB..! :)  

• I LOVE FB because it rocks ,Fb is the best social networking site i ever found or had. It is awesome, it has so many cool features :)
  
•  SOME COOL FEATURES- 

                                                                   Facebook Chat

On April 5, 2008, Facebook pre-released Facebook Chat.^] As of April 23, 2008, Facebook Chat was released to the entire Facebook user base. Users may chat with their Facebook friends on a one-to-one basis, or a user may chat with multiple friends simultaneously through the groups feature. Instant messaging clients that currently support Facebook Chat includeAOL Instant Messenger, eBuddy, Flock, Miranda IM, Trillian, Empathy, Digsby, Pidgin, Adium, Nimbuzz, FIM (Windows Mobile / Windows Phone 7), Palringo (Windows Mobile), Meebo,Tokbox as well as QIP Infium with a Firefox plugin. Windows Live Messenger 2011 (Wave 4) can connect to Facebook as well. Facebook Chat can also be run on the desktop using Gabtastik, a dedicated web chat browser. Facebook Chat can also be run on the iPhone or iPad using Facebook Chat for iPhone app. On May 13, 2008, a Facebook developer announced that they are working on XMPP support, allowing hundreds of instant messaging clients to interoperate with the service; this functionality became operational on February 10, 2010.

Credits

Facebook Credits are a virtual currency you can use to buy gifts, and virtual goods in many games and applications on the Facebook platform. As of July 2010, users of Facebook can purchase Facebook credits in Australian Dollars, British Pound, Canadian Dollars, Chilean Peso, Colombian Peso, Danish Krone, Euro, Hong Kong Dollar, Japanese Yen, Norwegian Krone, Swedish Krona, Swiss Franc, Turkish Lira, US Dollars, and Venezuelan Bolivar. Facebook credits can be used on many popular games such as Happy Aquarium, Happy Island, Zoo Paradise, Happy Pets, Hello City,It Girl^[5] FarmVille, and Mafia Wars.

As on 30 August 2010, Facebook gifts were disabled and from then on, Facebook credits are being used for the Games alone.

Facebook Live

On August 13, 2010 Facebook launched a new service called "'Facebook Live'", a live streaming video channel that is intended to keep Facebook users updated to what is happening on the social networking site.^[9] The service, powered by Livestream, will feature videos from Facebook staff members and celebrity interviews, but not designed for Facebook users to showcase their own videos. All the content shown on Facebook Live will have some tie-in with Facebook products, features, or how people are using the site.^[10] Facebook said this is not an opening to get them into the video distribution space. The first official guest was America Ferrera, the leading actress in the television series Ugly Betty. She discussed her new independent film The Dry Land, that was being promoted almost exclusively through social media channels.^[10]

Networks, Groups, and Like Pages

Individuals or companies can create "Like Pages" which allows fans of an individual, organization, product, service, or concept to join a Facebook fan club. Like Pages look and behave much like a user's personal private profile, with some significant differences. Public Profiles are integrated with Facebook's advertising system, allowing Public Profile owners to easily advertise to Facebook's users. Owners can send updates to their fans, which shows up on their home page. They also have access to insights and analytics of their fan base.^[13] Early on, users had the option to "become a fan" of the page until 19 April 2010^[14] when the option was later changed to "like" the page. While an individual with a personal profile can acquire up to 5,000 friends, a "Like Page" can have an unlimited number of "Likers". "Like Pages" can also be customized by adding new Tabs using the Static FBML application. This powerful feature can bring additional functionality to a page such as e-mail collection, specialized content, or a landing page for sales activity

Facebook allows different networks and groups to which many users can join. It also allows privacy settings on basis of networks. Groups are used for discussions and events etc. Groups are a way of enabling a number of people to come together online to share information and discuss specific subjects. They are increasingly used by clubs, companies and public sector organizations to engage with stakeholders - be they members of the public, employees, members, service users, shareholders or customers. A group includes but is not limited to the following: the members who have joined, recent news contents, wall contents, photos, posted items, videos and all associated comments of such items. In this respect, groups are similar to pages but contain more features^{[citation needed][citation needed]}. Groups are limited to 300 groups per user, though it is possible to find some users with more than 300 groups because it was possible to dodge this limit in a few ways, until recently when they fixed those exploits.

Phone

On September 2010, rumors of a "Facebook Phone" similar to Google's Android, circulated in business and tech industry news. In an interview with well-known technology blogTechcrunch, CEO Mark Zuckerberg was noted to have said, "Our strategy is very horizontal. We're trying to build a social layer for everything," while denying that they were attempting to compete with the Apple iPhone or Android.^[22
                                                               

                          ^{And many more features.!}