Will i get sued, if i take some content from other websites?

Dear Reachstan,

If your work is nothing but literal imitation of the copyrighted work with some viration here and there, it would amount to violation of the copyright.

Where a person has copyright in a literary work, and any other person produces or reproduces the work or any substantial  or material part thereof in any material form, he is committing an infringement of copy right.

By using others link for review, it is amouting to cheating to the customers, its not the matter of credit to them as you have not taken permission to use that link for your purpose.

Copyright infringement is judged considering various factors such as quantity of the matter copied, quality of the matter copied, whether the copying is with the intention of saving oneself of the labour of creativity, impact on the original work (in this case mouthshut site) etc etc. The best option would be to take the permission. Instead of taking content of reviews you may just give hyperlinks, and in doing so make sure that mouthshut doesn’t have any clauses restricting such hyperlinking (As far as hyperlinks are concerned, one can assume implied consent of the website owner unless it is expressly restricted).