From the FAQ: > Q: I submitted a problem - what happens next? > A: Over the next 14 days, developers will be able to apply to solve your problem. You'll get a

From the FAQ: > Q: I submitted a problem - what happens next? > A: Over the next 14 days, developers will be able to apply to solve your problem. You'll get a list of applications and a recommendation of who to choose. So, I guess the answer is "subscriber chooses, and if there are multiple subscribers, they (or the one that paid the most) make(s) an agreement."