Companies will actually pay you to sign up for free trials and give out your information. That is why you will see a ton of get paid to sites that pay you to complete offers.
Most sites have free and paid offer. Free offers usually consist of giving out your email address and pay less, but paid offers usually have to do with signing up for free trails to services. It requires a credit card down, but membership can be canceled before you're charged.
Getting paid to complete offers won't make you rich, but you can a full list of legit sites at All Scam Free Jobs.
