Hi, There could be a few reason that caused the low rate such as the geo traffic. In order for me to look into it, please PM me with your publisher account ID. Thank you!
Adbrite is much better then clicksor, BUT adbrite will pay you after 3 months. Is that ok ? (this is shit)
adbrite pays better than clicksor. Also clicksor are cheap as fuck. They make people pay 9$/1000 full page impression and thats world traffic and you only get paid like 20 cents per 1000 impression. I stopped using clicksor long ago. I was making 1000$ a month with cpxinteractive and once i switched to clicksor I was only making 80$ a month. I was using there full page ads, banner, popups, full page and inline with clicksor and on cpxinteractive I was using popup and banners only.
All I can say is that Clicksor doesn't pay much and I don't like them. I would recommend goign with BidVertiser as you mentioned.