On the about us page of Blutit you will see this:Blurtit.com has been created to provide useful Questions and Answers between a wide range of site users.

Blurtit has the contributions of a number of writers with a very wide range of knowledge and experience and qualifications who will do their best to answer any questions posted on the site.
Anyone can join, ask a question or answer one.
However Blurtit is not the place for offensive , obscene or bizarre material and such questions and answers will be deleted and anyone posting them removed from the site.
The selection of topics is huge and the contents are added to continually. At the bottom of the Home Page is a list of all the sections available on the site.
Researchers are learning all the time and your questions and answers can help them as well as other subscribers. It's a free to join site which can really help you expand your knowledge.

 it is a site where u can clarify ur doubts by living ur question simeltaneousely u can answer to all the other questions present in Blurtit