Crowdsourcing where you can't park
Ryan Sawyer has started a project to map all the streets in the Boston area that are limited to people with resident-only stickers or otherwise restricted. He's set up a map on which you can add restricted streets, says:
I completed the entire city of Medford (since the parking restricted streets were readily available on the MPD's website), but the other towns/neighborhoods like Boston, Allston/Brighton, Cambridge, etc are not as easy to track down.
Ed. note: Hmm, in the winter, he could add streets where people put out crap to save spaces.