Some class action lawsuits are rather lucrative if you've got the proof and time. I've been part of three in the past year that have ended in getting some giftcards. Petsmart one ended in me getting two giftcards for $472 each. Then the cheveron texico debit card one ended up with a gas card worth $3200.
Last one I got in on was for target's of california for their wedding/gift registery which if I'm not mistaken will net around $5000 in the form of a Visa giftcard once its been finalized. Target fucked up big and ended up sending personal information to private companies after you opted out of sharing your data. Then went on to deny such claims even after the third parties confirmed the info was from Target.
I've already filled this one out just to see if it'll net anything over a buck or two.