Source:www.hotelchatter.com

The savvy Las Vegas gambler always joins a casino's "Players Club" and is careful to insert the credit card like membership card into the slot machine before commencing play.

For several years casino's that are owned by the same conglomerate have combined their cards so you can gamble at all of their casinos and have your play time credited to one account.

Here's an article that lists what casinos are grouped together under a given Player's Club.

This article offers a method of comparing player's clubs and several links to informative slot players news.