[bkyan]

I agree with the "tax" idea, but I think the small fee needs to be much higher, to get serious buyers and sellers. As a buyer, I would be more concerned about the job being done quickly and correctly, than trying to save some pennies. As a seller, I would be more inclined to participate in the system on a regular basis, if I could generate a reasonable income from it.

[nurik]

I see your point. However, jf you have a smart solution that's worth buying, people will buy it over and over again and even when it seems "cheap" it could generate significant revenue (just like the songs etc. on itunes)...

[bkyan]

I totally agree with you on those favors where the deliverable can have multiple buyers. I tend to think of most favors as being one-offs, however.

[nurik]

I think you are right. If you look at Amazon's site for small digital tasks most "favors" are one-offs: http://www.mturk.com