To be honest I'm a bit hesitant to upload to a site with a checkbox to offer to sell all rights.  Not that I wouldn't do it, but I'd want something equivalent to a sale of all rights in the macrostock world, maybe around $20,000 to $50,000 an image.  I suppose I could prices in, but anyone willing to pay that kind of money will probably get a hold of me anyway. 

I just find the suggestion of selling all rights for $350 a bit insulting.  That might be good earnings in the microstock world but it's about one non exclusive RM liscense macrostock.  Does anyone have any experience with this "feature"?

Trying to decide if anything I'm doing is good enough / useful as microstock:

I minored in Photography and did some work as a photojournalist in the late 90's.  It's been about ten years since I last did any serious photography.  I'm interested in getting back into things a bit again.  Couple really basic questions:

1) I have a mid range (3MP, several years old) "advanced" point and shoot digital camera and a analogue (i.e. film) Canon SLR with some VERY nice glass.  If I shot some slow film and had it scanned would the images be marketable.  What about if I picked up a medium format used on ebay?  (Yes, I know that I could buy a new digital SLR with the money saved from a couple months of not shooting with film.)

2) What photo types sell well as microstock?  I'm seeing a lot of portfolio's with very high concentrations of studio work. 

3) Will the stock site down sample a large image file into a buyers requested resolution or do I need to upload multiples of each file?