reg fee..maybe it would be more interesting where you think the value should come from, its an awkward domain and a .org, there is not gonna be any type-in traffic and there are plenty of other choices out there unregged for someone wanting to make a site about just answering php questions..come on now..
Edit:
Another thing: You seemed to have regged a lot of domains recently that dont seem to be very good, here is one piece of advice that might help you to figure out if its worth regging or not: If someone would offer it to YOU as a reseller, not some hypothetical end-user or whatever this domain, what would you do?. ., If I would offer you that name phpanswers.org via PM, would you actually pay me $50, $100 or more? If you would answer that question with no..dont bother regging the domain, why waste time with domains that might only be worth $xx if the small chance of an end user coming around actually happens