I'd rather not post this on here as is soils the otherwise reputable microstock industry, but i feel a duty to. you'll see the link above DOES NOT WORK - there is a good reason for this (although the site is still up and running) please read on.
Aside from being somewhat slow to access and freezing up sometimes, stockphotospot have rarther a good clean looking website, which is unusual becuase SCAM websites are often badly programmed and cheap looking and hence can be spotted a mile off.
The attractive claim of 2 dollars per photos upload will materialise only if you sell your photos at 10c per time (you get 10c for uploading) and once you have earned 2 dollars as I understand it you will lose all right to get any more royalty from sales of that image.
The microstock forums are full of messages from people who have not been paid by this site despite earning more than the payout amount. More importantly, the is not one word of defence on any of these forums by the site management, and it's clear that the owners/operators of other microstock sites do participate in the comment on these forums. stockphotospot seem to have something to hide, and have made a lot of people very angry.
(I have listed image price $99 to stop this site appearing at the top of the list of good places to buy)
It's for you to judge for yourself about the site, I can only strongly guide you with the word:
Stockphotospot - Not Recommended