Jean Scott compares "free Play" to cashback. Some interesting observations. http://jscott.lvablog.com/?p=3633
She took a whole page to say pretty much nothing. She did highlight one negative. "Another negative for many players is that using free play may trigger a “trip” which ruins your daily average at casinos where any action is considered a “play day.” Not always does a player want or is able to put in his usual amount of play on a day that he collects free play." If someone is not willing to play this much, they should not have gotten the freeplay in the first place - in my lowly opinion.
