Virtual College Fairs?

I am fascinated by this idea, but to be honest with you I don't know that much about them.

How many students attend? Do parents get involved? Or could this be coordinated through a school where the entire junior and/or senior class can participate? If you were at a high school would you be open to an event such as this?

Or would this be something that primarily took place in the evening or on a weekend to accommodate students and parents being at home to log in?

Then, how much can the computer handle? What's the level of user friendliness that needs to be there? Obviously it needs to be fairly intuitive but how complex can you go with it?

And... what's the level of personalization? Can students make an "avatar" (computer image) of themselves to "walk around" in? (Yay quotation marks!)

So, if you've participated in one of these (I believe College Week Live has the biggest one) will you let me know about your experience? Was it cool? Did you get everything out of it that you liked to?
Counselors... is this something your school would participate in? Colleges, are the students who visit your virtual booth responsive?

So much to learn...