I've been using Gixen's free service on and off for many years, and love the convenience of not having to sit by the computer when an auction is ending. I've only ever had one failure. Gixen does warn that that is a possibility, and at the price I'm not complaining. I like the straightforward interface.
I suppose Gixen is in the position of making a webpage that is primarily attractive to cash-strapped people like myself, which means not many users sign up for the paid service. If I had money to burn I wouldn't bother with sniping. So thanks for the awesome website, and if I ever find myself not needing to pinch pennies I will send some your way.