The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.
Ask.fm - Curious? Just ask! Openly or anonymously.
Blurtit - Blurtit is a Q&A website. You can ask a question or answer on any question.
Peing - Collect anonymous questions with SNS!
Ask Me Help Desk - Ask Me Help Desk is a question-and-answer site.
Tellonym - Tellonym is the most honest place on the internet.