MicrostockGroup

Yes, it would have been more precise and current.  Your numbers still confirm that you get twice as much per picture at IS compared to SS, like what it does for me.  However in my case, SS and IS end up giving about the same monthly $ amount at this point.

Why would SS be "of course!"?

Mine
IS: $0.55
SS: $0.31

madelaide: I calculate $/file on a daily basis (i.e. daily income/portfolio size), then average these numbers together on a monthly basis.

$0.20/file/month means that I will earn $0.20 in 1 month for each image I post to that site. If my portfolio is, say 800 images, I will earn $160 from that site.

One of my goals is to maintain an average of $1/file/month. I'd be at that level if my sales at DT and FT weren't so dismal. I'm very near to the point of abandoning FT (currently 9c/file/month - egad!) in favor of StockXpert, whose Alexa numbers show much promise.

here is my result, 9 months into the business, with total of 7070 Dls,

$0.31 SS
$0.80 DT
$0.54 IS
$0.59 FT
$0.74 BigStock
$0.78 StockXpert

the ranking is based on total revenue.