By writing a review for your product you get points and also get upto Rs. 5 in cash.
Links: there are 2 types, one is writing a blog and giving clickable link to any page of IRC and there should be atleast 3 clickable links. The other one is answering in any q and a sites like yahoo answers, rediff q and a, ammas etc and give IRC pages as clickable links.
For any q and a link you get upto 6 points and Rs. 2 per q and a and for blogs you get upto 45 points and upto Rs. 15.