I was just listening to an interesting podcast on the way to work - Public Speaker Quick and Dirty Tips. This is Lisa B. Marshall’s ongoing blog and podcast that helps people deliver better presentations, improve their public speaking and communicate better overall.
The tips from this particular episode are great and very Web 2.0. For example, she recommends that presenters encourage attendees to take notes via Twitter so that their associates and followers can benefit (very viral). There are multiple benefits for all involved. The speaker enjoys more exposure. The audience gains improved retention (research supports that note taking improves retention). And, a collaborative environment is formed as everyone tweets and uses hash tags to follow along. Summaries and specific notes can be easily copied and pasted into other capture tools. Plus, the streams are searchable on search.twitter.com or organized via Twubs or Twitterfall.
I highly recommend you check this stuff out.