Hmm, a "think and drink" meeting?

Here's another oldie but goodie I found stashed in my RSS treasure box: Think and Drink, from Event Marketing 2.0. Basically, these originated pretty simply: Scientists get together at a pub to talk about something, and the organizer ("an international scientific publisher who is using these small gathering to brand themselves among the thought-leaders," says poster Margaret Core), just buys the first round.

I know people do this informally at pretty much every meeting, but I'm not sure I like the liability aspect of doing it as an organization. Still, it could work for the right group.