Back in the old days though people would register thousands of domains just to test the parking revenue, if it made some money they kept them and if not they got rid of them.
In effect they abused it, and rather than them being fined or disallowed from ever registering anything again ICANN simply allowed it and now everyone suffers.
Moral of the story is that if there is any chance of it being dodgy or any chance of a typo then do not register it unless you are willing to wave bye bye to your munnies.