Ghosty there is no harm in deleting accounts,it is just that some of these guys actually activate their accounts later on.
I would rather sat all this 'deletion' shouldn't be done too much.
Multiple User accounts are acceptable here with minor differences.
The reason i am saying this is because it doesnt look good in the statistics,we get points for the members and posts we have and deleting users reduces our points.
We are after all participating in the forums category for Forumotion.The one with most points are on the top.
No offense mate.