Marcel de Ruiter asks whether discussion forums are the Enterprise 2.0 killer app:

So to recount, let us list the main pro’s of discussion forums:

• just plain Q&A or information sharing
• the information remains stored and available
• the information is linkable and searchable
• community building
• customisation to different company entities / divisions / employee specialisms or enterprise applications (via sub-forums and categories)
• easy editing (WYSIWYG).

I'll briefly note that many of these features are applicable to blogging tools also. Discussion forums allow random topics to be started by random people, with the caveat that no one "owns" the end discussion which means (even though it's searchable) it may get "lost".

One way to bridge this would be either a "lazy web" type solution, where people could ask a question from their blog but the end result would be aggregated in a central location of question/responses.

(Rod Boothby comments further).