blog info

So I'm thinking of making my blog public again, but I need to work out how to keep my pictures mine. I have had pictures taken from my facebook page a few times and I'm sure from the blog. I've recently had blog friends and real life friends pictures "stolen" and used by other people on blogs, facebook and just in life. As much as I want to share my life with family and friends around the world, I still think I should have the right to decide if my pictures are shared on other peoples pages and sites.