While you won't make a killing by doing any of these, it is a small amount, that over time will add up. The point earning sites are great for redeeming for gift cards to eat out or shop.
Survey Sites: These are sites that I have personally used and recommend.
Point Earning or Click Through Sites:
View ads and get paid - Easy:
Get Paid To Shop: Mystery shopping providers I have used before.
Focus On Service - Longhorn and TGI Friday's (select locations)
MarketForce - Various fast food restaurants and retailers
Mystery Guest, Inc - Cheescake Factory (reimbursement as gift card for future visit)
Second To None - Books A Million, Krispy Kreme, Staples
Service Intelligence - Publix, Cinnabon, Arby's
Sinclair Customer Metrics - Ann Taylor, Auntie Anne's, Charlotte Russe, West Marine, Williams-Sonoma
Volition - Job board for all MS providers
Affiliate Sites: Ad revenue to your blog.
MySavings Media- Quality Offers - Top Payouts
We Use Coupons - Ad Previews, Coupon Database, etc links that create revenue for you