A few weeks ago I signed up Klout.com and I just got my first perk in the mail. Klout is basically a social networking site that takes your statistic information from other social networking sites like Facebook, Twitter, Instagram, etc. It takes your information and then you are qualified for "Perks" according to your Klout score. Your profile will show you your score and how many people you potentially influence. My Klout score is 53. There's really nothing to it except sign up and do what you normally do.
Anyhoo, my first perk that I claimed was to try a polish from the Essie 2012 Summer Collection. I was sent Essie "Off The Shoulder". It's a really pretty pink and it is PERFECT for summer.
A lot of the perks that I've been eligible for were discounts and coupons but this one was completely free. I like free, especially free polish lol.