I am interested to know how you keep track of images. In other words what method do you use to keep track of which sites you have submitted what images to,which ones were rejected,pending,etc. Thanks

Leaf, t doesn't bother me to keep track, it frees my mind...

Mike, MS Excel is what I use, one column per site, the first three ones being for the file name, the title, and the thumbnail which I copy from one of the site and reduce to fit.

In each box I put the site file number (if any), the date submitted, the result date with any useful comments given from the site regarding the picture. Plus a color code for the practical visual aspect: blank for waiting, yellow for approved, grey for refused, and green for deleted by myself.  I also use bars to differentiate the dates submitted.

I find this system very practical.  This way, I don't have to think too much about what I did with what and with who, just entering the new info and go on shooting   

Have fun with whatever you choose!

Yes, it would be...
I submit to more sites, but I am not that prolific... you have more that 10x more pictures than me on DT, and quite an amazing portfolio!  Are you doing stock full time?

i'm a mac guy and am using aperture to manage all my images

i create folders for each site i submit to...
1) to export
2) in queue
3) accepted
4) rejected

so i can move the images as i edit them to each 'to export' folder, then for all sites that accept FTP, i do an export at the end of the day to their individual finder folder where during the night, an Automator process kicks off and logs into FTP and uploads the files from that folder and then throws them to the trash. The next morning, i log in to each site and (waste my time) add the categories. Then I move the images to the 'in queue' folder. Finally, when i hear back from the site about the images, i move them either to the accepted or rejected folder.

it is all very easy to do in Aperture and i have a record of which files have been submitted to whom etc. That makes it a very visual way to deal with it - i tried the spreadsheet thing and it was impossible for me to remember what images were what and numbers sure don't do it for me.