Mouthshut is a website where you can earn money by post reviews on the products which you use.
You have just write a review on any product and share it on social media as on facebook or twitter. If mouthshut team approved your review they give 20 points on positive review and 40 points on negative review. And after you collect 500 points you can cash those points.
The problem which you face in this website is that it take time to get to get your review approved or disapproved. So you have to keep patience.
if you have good skill of writing, use this website to earn money. It is a trusted site.