How leery are you about buying online during a live auction broadcast? What shakes, or makes your confidence? Are there some sites you feel safer buying from, and who are they? What features do you like best in some of the systems you use to buy online?

Why do I ask? 

I work with independent auctions on adapting the online to their infrastructure. I speak to them about building dealer confidence, and looking at how things are going from the dealer's perspective. Now since I'm not a dealer myself, I can only convey what I expect to be the contributing factors for a successful simulcast. I would love to hear some thoughts from you guys out their on the front lines!