How does it work??
& is it safe to enter your personal imformation??
Has anyone tried it?
It's safe to use, but it doesn't pay you a lot, if anything. I do the amazon affiliates program, which also doesn't pay much uness you promote it a lot.
You have to decide how much you want to use your blog to sell to people. For me personally it kind of leaves a bad taste in my mouth, so I won't promote anything that I don't personally use and like.
Most people who make money from their blogs are selling ad space to other people directly, but that takes a long time to build up enough of a reader base before people are willing to buy sponsor ads on your blog.