As I'm sure some of you may know, vBulletin 3.5 will have a feature involving something called Ajax. Basically, all Ajax is is a method to update the data on your page without actually refreshing, but I think it's very cool, and have already looked into using it in my scripts.
Here is a very good guide to it. I was so impressed with it that I sent an email to the writer thanking him for presenting such vital information so simply.
http://www.onlamp.com/pub/a/onlamp/2...tprequest.html
I've already pretty much finished a chatroom script with it. What a very cool and underused feature.