I don't know anyone who still dials phone sex lines? I thought the Internet kinda killed those off , but there's one phone sex company that's taken a FASCINATING strategy to make sure their call centers always stay busy.

--The company is called PrimeTel Communications and they're based out of Philadelphia.  Very quietly, over the past 13 years, they've been buying up 1-800 numbers.

--PrimeTel obsessively monitors the status of 1-800 numbers.  As soon as any company relinquishes one , either because they shut down or stopped making payments, PrimeTel instantly buys it up.

--And by doing it, they now AMAZINGLY control about 25% of the world's 1-800 numbers.  So if you dial four random 1-800 numbers, odds are you'll encounter at least one that's owned by PrimeTel.

--And when you call a PrimeTel 1-800 number, you hear a recording of a woman's voice offering to talk dirty and nasty to you for around $2.99 a minute.

--Through their aggressive buying, they've gotten some prominent 1-800 numbers like 1-800-CHICAGO, 1-800-METALLICA, 1-800-CADILLAC, 1-800-CAMERAS, 1-800-WHIRLPOOL, and 1-800-BEATLES.

--PrimeTel also uses some of their 1-800 numbers for other spam-type businesses like mortgage refinancing, crazy diets, and timeshares.

--And . . . this is all legal.  PrimeTel is one of about 400 companies registered as a toll-free service provider so they can legally reserve and assign unclaimed 1-800 numbers, the same way major phone companies can.

More From 1025 KISS FM