MyPoints is a stable company where you earn $/rewards in a "paid to read program" In this type of program, you are sent daily emails. Sometimes 1, sometimes up to 4 - it varies. In the email is a link, click it and it will bring up a web page and your account will be credited 5 points.
They also have small surveys and games as well as offering additional points if you register or buy from that web page. Don't worry cause I've been sent to pages from legit companies - Lancome, Ebay, Fox Entertainment, Office Depot. If you're not comfortable with the site, just leave it. I've never had a problem with anything I've clicked through via a MyPoints email.
They have some referral points available, you provide email addresses and they send your friend an email. They also have an affiliate program in conjunction with Commission Junction.
Rewards are in the form of gift cards. You have to get at least 1400 points which translates to 280 emails. That is just clicking. If you take advantage of other offers of course your points add up faster. I've received about $70 in gift cards - mostly Barnes Noble & Starbucks but they have tons to choose from.
Anyway, I recommend it, work taking a look-see
Will Work from Home: Earn the Cash--Without the Commute