A definite definition of weblogs?
Rebecca Blood says in the "Weblog Handbook" that, "A weblog is a coffeehouse conversation in text, with references as required."(p.1 Blood) I can't say whether I agree or disagree with this for two reasons.
1) I've never been to a coffeehouse
2) I'm not sure what a weblog is
The only other definition I have comes from a link from Newha's Blog. Here Cameron Barret defines his own weblogs and gives links to other blogs that are different than his own.
Don't count out Rebecca Blood though. In chapter one she dives head first into weblogs; explaining filter information, how to provide context, media literacy, alternate points of view, etc.