Tweet volume is a section of twitter that you can look at to see how many times a word or phrase appears. For those of you not familiar with twitter:
Twitter is for staying in touch and keeping up with friends no matter where you are or what you’re doing. For some friends you might want instant mobile updates—for others, you can just check the web. Invite your friends to Twitter and decide how connected you want you to be. (Thats the boring site definition: but you get the hint)
http://twitter.com/
