Forum:Origin of username policy

One thing I've noticed over the past week or so is a couple of inappropriate names. Now, these people are obviously vandals, so will be blocked, but I've noticed that they only get blocks for a certain length of time. Surely, given the inappropriate names, they should be blocked indefinitely? Is there not a policy for this? If not, I suggest one be made that states this. Also, I think that any names which are very similar to other users' names should not be allowed, as they are generally attempting to get the other users mistaken for them. --The Thirteenth Doctor 20:01, October 31, 2010 (UTC)