Is there a site that keeps track of which hotels are currently not harassing (or even allowing) the girls to work the bar scene at the major hotels?

Sure, they publish it on the front page of the newspaper every Sunday, and you'll see it listed on the monitors at the airport.  If you can't find it at either of these two places, just call the hotel manager.

Heck, just call METRO and ask for vice. Why fool around with the unreliable rumors you find on the internet.

Changes too quickly and number of hotels to track makes it impractical. Besides most of the bar girls have their own little network .

Simply stated, and for many reasons, just forget about meeting a bar girl in Vegas.  The good, honest indpendents you'll find reviewed on this site and others are a much more reliable and honest way of assuring a good time when you're there.  If you do your research properly, you'll leave nothing to chance, and also have no chance of a pimp lurking nearby or a rip-off waiting to happen by a bar-girl.  HAVE A GREAT VISIT!