I am a newbie, let me start, so to see where I am:

I started in July, and some sites in Aug, overall I have about 29 days average across 6 sites, with a combined images of 1016, and the total for my first full month is : $249.00, so with this math, maybe if I double my portfolio with like kind of quality I maybe able to hit $500/per month.

of course I made 100.25 at SS for 12 days on line with 329 images
                          89.10 at DT for 36 days on line with 206
the rest is not even close to the two top which include FT, StockXpert, IS, BigStock