I agree. It has been my same problem trying leave some feedback before. I did make a purchas while back and the seller helped me with the detail like the friggin URL or whatever it is!!
I seldom sell so I give a crap, but I like to leave feedback to the seller when they make a point to request it.
If I am tryng to buy something I simply look at how long they been on site, any feed back, and I figure IF someone is hard up enough to screw me out of a few $$ they are in worse shape than me.