After shutting its virtual doors, Google Answers is set to return, this time modeled on Yahoo Answers' no moderators, no limits, no rules concept. If paid researchers is what you need to answer your question, go to Uclue. Or just keep it green.
uclue is yet another questions and answers site. What's special about this one? Well, it's staffed by former Google Answers Researchers, and operates in a very similar way (although with a few differences) to the now-dead Google service. (via Ars Technica)