That's actually how Elfwood does it. They give you a 50 pic limit (though I'm sure Renderosity could bump that number up) which works quite nicely. :) I don't know how others would feel about something like that though. I'm very new and only produce a single render every week or so ... I might feel differently if I was good enough to whip out several per day! ;) But anyway, it's an idea if Renerosity feels they need to limit the number of images uploaded. :)

"You don't know what we can see
Why don't you tell your dreams to me
Fantasy will set you free." - Steppenwolf