what is a discussion?

[dave snow]

what's the difference between a discussion and a blog?.....really....

[Chad]

BLOG [bl-ah-ga] n. an online diary; a personal chronological log of thoughts published on a Web page.

DISCUSSION [di-skuhsh-uhn] n. an act or instance of discussing; consideration or examination by argument, comment, etc., esp. to explore solutions; informal debate.