[alexisnorman]

This has been by favorite way of researching new music for quite a while. I'll usually start with an album I really enjoy and then read reviews or checkout lists with that album included to find similar (and sometimes totally different!) albums and artists. I know a lot of people who praise discogs.com but RYM deserves way more credit.

[sotojuan]

Yep. RYM has over ten years of user contributions. It's a disgusting mess of PHP with no API, but it works.

The new rewrite will have an API, though I am not sure what the stack will be.