Here’s another potentially useful bookmark. MySettlementClaims.com is a database of class action settlements so that you can quickly determine if you’re are eligible for a claim. It appears to be run privately by an individual, so I don’t know how extensive or well-updated it will be in the future, but for now it does include a lot of settlements that I wasn’t aware of. AT&T DSL, Apple iTunes gift cards, Skechers shoes, Vita Coco water, etc. In the end, you’re given the link to the appropriate official claim form.
It reminds me of sites that help you find unclaimed money, which I never really trusted until it actually worked for me. There are still many scammy unclaimed money sites, though, so I’d never pay money for any such services.