I find myself visiting polo less and less each day.... I suggest you visit Mintpal and Bteer and learn what it takes to be a credible exchange.
Also traders should get an option to cancel a new buy or sell order, but all you get once placing an order is a popup with ONLY "ok" button. This popup should give the option to cancel and the fact that it doesn't says that ur exchange is preying on peoples typing mistakes... Again look at how credible exchanges do it.
Actually, I don't hire new mods myself; I haven't for some time.
I do apologize for the recent slowness. We're rapidly making progress in moving the site to all new servers with proper load balancing. It should be done today or tomorrow.