My suggestion is to add this into their seminars.
Basically AVN/Xbiz/WA will allot some time for entrepreneural webmasters to get up on stage and showcase some business ideas they have and are looking for funding/partnership or to sell. There would be a panel of industry experts on stage to ask questions about the ideas/businesses and also give feedback.
This way it would mix in webmasters with great (and bad ideas) that need venture capital funding and also mix this in with savy adult investors that are looking for new ideas/businesses to invest in or ideas to make their businesses even better.
Anyways this idea came to me as I was watching the show
Dragons Den, which is basically American Inventor with a Canadian business twist. ;)
Anyways that's my 2 cents, I think it would prove to be a very interesting seminar to attend.
DH