I like mixergy, but the advertising is a real turn off.
Did you guys notice Andrew monetized the site now? With a "how much would you pay model" where the users can choose what to pay per month.
(pay to access older interviews)
Let the companies create a video and submit it to play and pay $20 for the spot. Spice it up. Make the advertising entertaining.
Does he even really need the advertising? Why not use the time to talk about a startup in his community?