As far as the Vendio/Andale counters go, I don't think they're free any more. I was using them for years, but lately I was having problems viewing them. Now I can't get to them at all and there's a statement on the Vendio site that says:
FREE Counters are available with the Image Hosting service.
and there is no free Image Hosting plan. So if there's still a way to get free counters from them I sure can't find it. Too bad - I liked their auto-insert feature a lot.
Guess I'll try the Sellathon counters and see how they work. I don't like the other free counters because I don't want to have to copy html code into my auctions.