This is a personal decision that depends on your playing habits and goals. If you intend to only log in every once in a while, then it's probably best to keep things simple by choosing one casino to gamble at. If, on the other hand, you like to spread your real money action around and try out different games, then you'll expand your horizons by signing up at multiple online casino sites. This will also give you the benefit of being able to claim seasonal offers whenever they should appear at any of the firms you have an account with.