Share Web 2.0

i think it would be a cool idea to get paid to compare products on the market..or even to try them out so that everyone will know if they are worth buying.
how do you go about properly setting up such a blog and approaching manufacturers to send their products to you? or do you just set up the site and buy your own products of interest to talk about.
i would love to do this and to get mass traffic to the site.
what are your thoughts?

I would like to know how can I start a blog and get to write on various subjects and get paid for it here in India. I love writing, but unfortunately, don’t know how to go about blogging and I’ve heard that some guys have made a career out of it. Would like to get as many answers as the wise men and women of this world can give me.