giving your ip to everyone watch it to a community with a lot of bad people, I dont think it's a good idea.
if you want the ip's to check make it like in WCL i think, sending it by pm to a mod, not adding it sign ups.
big +1
a guy who understand computer **** can do a lot of bad things if he have ur ip
thats actually not how it works at all, and a knowledgeable person about such matters can get your ip with not much effort when you are connected to plenty of public places he can connect to as well