Salon.com News | New rules: Telemarketers must display IDs: "Federal Trade Commission regulations requiring telemarketing firms to identify themselves take effect Thursday. Such calls had shown up on Caller ID as 'out of area.' Now the name displayed by Caller ID must either be the company trying to make a sale or the firm making the call. The display must also include a phone number that consumers can call during regular business hours and ask that the company no longer call them."

Link thanks to Orkgrrrl