We often comment on the success of online casino gambling and how it has changed the way many of us spend our leisure time. Apart from the slots the gambling game which has benefitted most from the introduction of casino gambling online is undoubtedly poker. Poker is of course a traditional casino gambling game which goes back many years, but the lack of opportunity to gamble on poker at our land based casinos led to a huge decline in the number of people regularly playing poker and poker gambling had almost become the preserve of professional gamblers playing in poker tournaments. Nowadays poker gambling has become a regular gambling activity for many people and even the poker tournaments are attracting enthusiastic amateurs. Almost all the official poker tournaments use the Texas Hold’em format of poker, but the online casino gambling sites offer a number of alternative poker formats, many of which can be played against the house for fixed odds. The appeal of Texas Hold’’m poker is generally considered to be the use of community cards and the multiple betting rounds associated with their use, but other poker gambling games such as Omaha poker also make use of community cards. When playing Omaha poker online each player is dealt four hole cards face down instead of two, which is then followed by five community cards as in the Texas Hold’em format. The big difference between these two versions of poker is that when gambling on Omaha poker the player must use two and only two of the hole cards in the showdown hand. This may seem to be a minor difference, but it can have a significant effect on the potential of hole cards in the early betting rounds. For example a player holding three of a kind will only be allowed to use two of those cards in the final hand, and there is only one more available in the deck. It is also worth noting for new Omaha poker players that because three community cards must be used it is not possible to have two flushes of different suits.