> Do you have IP, which is to say, creative works protected by Copyright?
We all do. Almost everything original you write down is automatically protected by Copyright. Every single picture you take, with very minor exceptions, is protected by Copyright. Every answer on stackoverflow. Every nontrivial comment on any social site. Pretty much all of the Tweets that are full-length. Etc.
The widely spread myth is that Copyright is something special, only applicable to works made with a "purpose". It's not, and no matter what kind of work you create, if it's copyrightable at all, it doesn't require any special action to be protected. In the U.S., registration of a work (could be your kids' scribbles on a piece of paper) with the relevant office gives you a bit more financial return in case there's a case for infringement, but is not necessary for a work to be protected.
The entirety of your comment is protected by the copyright law. So is mine. We both gave slashdot users a license to use it, but we retain the rights in spite of that.