O'Reilly Radar > whocalled.us

O'Reilly Radar > whocalled.us: "whocalled.us is a site where people can share comments about the identity of phone spammers. Get a call from an unrecognized number on your cell? Look it up to see who it was, where they are, and who else they called that didn't like it. Here's how to tag this interesting: antispam hacks, collective_intelligence, smartmobs, surveillance.... Not to mention another clever use for the vestigial .us domain!"