personally, I enjoy thinking up unique ways of expressing who I am, and since the net is limited changing your name to distinguish a change in your circumstance (ie newly single, just married), or
just because is just fine, imo..however, I think there are a few out there who use them for other more sinister reasons..but ultimately whoever you are shines out apart from any name chosen and your personality creates an overall impression of who you are..so no matter how clever you are, there is always someone who may want to figure out your puzzle..to that I say "bring it on"