had a quick glance at the plugin page, still 2 questions open:

- how about authentication? I mean whats stopping random people to sign up and bid? The verification process lies completely with me, right?
- how much 'overhead' does the plugin add in terms of DB calls... just curios to know about the performance as I'd like to know up to which 'size' I can scale the thing... in terms of how many visitors, bidders, etc...