Ask HN: Should I build this? Knowlegde base for questions Google couldn't asnwer

Google often returns only a few unhelpful results when searching for obscure error messages. Sometimes I find the answer myself after some debugging and feel that I should share it in case someone else is looking for the same thing. Answering my own question on a message board seems silly and often so does blogging about it.

Would it be helpful to have website where you can add your query along with the answer so Google can index it? Perhaps in the form of a wiki or a message board? Would you use it?