Ask.fm - Curious? Just ask! Openly or anonymously.
Peing - Collect anonymous questions with SNS!
Confessout - Anonymous messaging web app.
Tellonym - Tellonym is the most honest place on the internet.
SocialFun.xyz - Receive anonymous messages from your friends, co-workers and Fans. Find out what people loveSmiling face with heart-shaped eyes / hateFace with thermometer about you!
Zaqa - Zaqa is a Question & Answer based social networking tool.