Swagbucks (updated 8/22/2016) is still the most popular surf, survey, ... rewards site and it is definitely proven to be legitimate. If you are looking for a fairly easy way to pick $25 or more in a month then I would highly suggest Swagbucks. Not a ton has changed since I first looked into it in 2013. Exchange rates vary a little per reward (currently there is a deal for the first gift card redemption in a month - e.g., just redeemed 2200 swag bucks for $25 Amazon gift card) but overall a penny is the typical value of a Swagbuck and it relatively easy to grab 40-50 Swagbucks per day and I have had no issues (even on work days) picking over 100 Swagbucks per day.
The Swagbucks Reddit typically contains the best information about offers that are easy to complete and discussions about what users are doing to get the maximum Swagbucks in a day.
It's free to sign up for Swagbucks and only takes a minute. Not sure how long it will last but there is a current deal for a $5 sign-up bonus. You can go directly to swagbucks.com or use the following referral link (http://swagbucks.com/refer/DoubleF).
