Unless you're busy spamming the county, attempting to hack secure sites, or otherwise just being a creep in some manner there is no real harm in people seeing your IP addy.
Just a thought. It does nobody any good.
But I'm all for conspiracy and paranoia though... So just in case, I recommend one of these.
No man is so foolish but he may sometimes give another good counsel, and no man so wise that he may not easily err if he takes no other counsel than his own. He that is taught only by himself has a fool for a master.
Hunter S. Thompson