Facebook’s social networking service allows users to create personal profiles and connect with other users. The site enables users to share data, including pictures, Web links, video clips and biographical information with other users. The service includes a “news feed,” which lists status updates from people to whom they are connected. There is also a mailbox, games and groups. Software developers can create Facebook applications and allow them to be used by the Facebook user base.
Twitter is a popular social networking that features instant updates from people and organizations that Twitter users follow. Users are allowed to enter posts, or “tweets,” of up to 140 characters. Because of the limitations, users often include abbreviations in messages. For example, if a user is “retweeting” a post they want to share, they can write “RT” (“retweet”) at the beginning of the message.
Google+ is a more recent entry into social networking platform offerings,
having launched in June 2011. The service allows users to group their friends into different “circles,” making it easier to share selected information
— such as music or websites — with particular groups. Google+ users create their own personal profiles, which include a profile picture, biographical information and website links. Users can share external websites with other Google+ users by clicking the “+1” button that is integrated on individual websites.