is content created by people using highly accessible and scalable publishing technologies. (Wikipedia)
"A category of sites that is based on user participatio n and user-generated content . They include social networking sites like LinkedIn or Facebook, social bookmarking sites like Del.icio.us, social news sites like Digg or Reddit, and other sites that are centered on user interaction.
"Follow" recommendations are marked with an '@' sign, followed by a short name. This is the syntax convention when referring to a person's twitter account. This blog's twitter account is @bph
"Follow" - "Friends" is asynchronous. You don't have to follow someone in order for his/her to see your tweets.
Hashtags = topics to collect all tweets for 'search'
If you are interested in technology news, follow @mashable or @techcrunch and or @CNETnews and @Wired I have found http://www.muckrack.com/ to be a great resource for finding journalists online. MuckRack is a directory of journalists that are on twitter, and it follows them providing a twitter stream outside of the twitter website.
Shorten URL: www.bit.ly or www.cli.gs or www.tinyurl.com