(NBC)-- Didn't answer that call in time? It might cost you big time to find out who it was.
The "one ring" scam is spreading, according to a warning from the Better Business Bureau. Scammers, using auto-dialing computer programs, call your number and let it ring "once". If you're curious and call back, you'll be connected to a paid "adult entertainment service" overseas, and hit with a $19.95 international call fee up front, plus $9 or more per minute for the unwanted "service."