> Why don't they introduce a system where you can say, I need this answer for 5 bucks.
I think the problem with that is how do you prove it's a good or bad answer? Say you offer a bounty and I generate a great answer. You look at the answer and use it and then flag the answer as bad so you don't have to pay.
Someone reading your profile will have to parse whether the not-paid answer actually answered the question, before they can determine whether it's a "non-paying customer" or just someone refusing to pay for an irrelevant non-answer.
You can show something akin to ebay's reliability value based on user feedback. People can establish payment conditions before doing any task, I don't think that would be a problem.
I think the problem with that is how do you prove it's a good or bad answer? Say you offer a bounty and I generate a great answer. You look at the answer and use it and then flag the answer as bad so you don't have to pay.