Although it isn't acting, it is a great way to spend some leisure time.  I definitely do not advise anyone to gamble away their headshot money - and most definitely not your rent money.  However, if you want to play some free games of poker or learn how to play craps, many of these resources can help you out.  If you promise not to develop a gambling addiction, then go right ahead and have some fun.  Who knows, maybe you can get a job on a new reality gambling show.  Seriously, I met someone who was developing a reality pilot about gamblers.  You never know!