Fake women on Myspace and various dating websites. The women do not actually exist(except in photo form), but are there to lure you into porn sites, credit card scams, and things of that nature.
They are usually scantily clad and "horny".
The term began from the large number of "fake" women residing in the sleepy town of Keller Virginia.
"Jesus Christ, I got 7 friend requests from Keller Women today."