I don't think you should avoid people with no feedback, but you should be careful too. Everyone has to start somewhere. Presentation of the auction is key to getting good results. Too many don't make a visually appealing ad. This doesn't mean you need fancy graphics, but something simple, like use paragraphs and proper English.
Haveing 0 feedback will probably not affect you as long as you present a good image of yourself from the auction. Look at other auctions, and see what you like and don't like, and try to emulate them.
Getting ripped off is very very rare.
Also, try to be as truthful as possiblle. When you exxag, it leaves the other party more likely to be angry at you, and that extra dollar or two isn't worth it.