What I find very weird is that many people go to the trouble of posting angry warnings that all photos on their personal blogs are copyrighted and shouldn't be used without the owner's permission. I'm not talking about any kind of artwork here. Just regular, completely unprofessional photos everybody snaps on a daily basis. I don't know what possesses people to feel so protective about stuff that they choose to post online.
As for me, if I post a photo on my blog, this means that I want people to use it. If somebody finds my clumsy pictures useful for any purpose, that's great, I'm happy. Free exchange of information is the best thing about the Internet.