I'm aware of IRC. I've hosted my own IRC server since 1999. But, I wasn't asking about IRC. Although, IRC is my inspiration for this question. I'm talking about a forum, accessible from the web obviously.

I assume you mean something like the front page of hacker news but where you could watch the positions/scores change and old items fade out as new ones take their place? I think that would be pretty slick. However I can imagine people wanting a "pause" button in case they don't appreciate the idea of things they were planning on clicking on disappearing. Were you planning on implementing this?

I'm just brainstorming for something fun to work on, at the moment.

I haven't really thought out all of the different in's and out's of it all, but I think the issue you bring up would be easily overcome. It's more of a presentation issue than something going on in the back end, I think.