Roy talks about Chris Pirillo charging for his technical expertise:
"Paying 27$ for that one and getting an answer 3 minutes later with 4 sentences - I'd feel cheated."
I dunno, $27 to have an answer in 3 minutes would probably be very worth it to those in dire need of a rapid answer. Not handy for your standard "Hey, what is a web service" type of question, but maybe for a specific question on a specific problem you're very stuck on. If your time is worth, let's say, $30 per hour, and Chris's answer saves you >1 hour of your time, then it might be worth it. If it's 4 sentences that solves your problem, then that's probably good enough.
Datagrid Girl