True, but the picture could have come from them actually, so it's a combo of you and them on the listing. It's a "leg up move" in search. ;) I suspect it's the Google plus picture showing and they've associated it with your blog, BUT why is the picture not showing up next to the main site and only on the subdomain, which is my wordpress.com site if that is the case? I know you can't respond to what they do.
Interesting also that they are focusing on author photos rather than content photos. But then again, perhaps they have no right to take the content photos from my wordpress site, because they are making money from their listings. They would be using my content photos for their commercial purposes one could say. So it would make sense if they only used the author photo of me on Google plus for this purpose as I'm sure I've given them permission to use it by clicking yes to one of their agreements. ; )