Usually the people who get 'nominated' are the ones with a lot of webmaster traffic [so you put up the 'we got nominated' graphic on your site and drive traffic to xbiz].
Also, it may come as a surprise to you but.. the winners are usually the ones that advertise with them or have a lot of webmaster traffic too so they can put up the 'we won' graphic and send traffic to xbiz.
Kind of strange how that works huh?