The biggest problem with online Omaha games is that most players go there just to 'take a trip' and think they have to play with all their
hands because they got 3 identical cards and an Ace for e.g.
I think most people don't even know what kind of starting hands to play in Omaha, they just call and then happens what happens.
That's why it's hard to play, especially with small stakes. In the case of Omaha, there is a much greater chance that a full, poker, straight flush, Royal Flush will come, not just plain hands of one or two pairs, this must be accepted.