Are comments allowed? Just post one. If the image is watermarked, let them know usage is not free. If they don't take it down report them to the google people.

Just a note, usually with some smart searching on the web you can find out who these people are.

and i hope server or blogger service will really suspense or take down a website if the users are violating copyrights..

In order for that to happen you need to use the best avenue for reporting and follow through on it. I just got done chasing down a few of those Pinterest people for having a bunch of my stuff there - food and wedding images. One girl got pretty snippy with me, so I had my attorney send off a note. That fixed it fast.

In order for people to mind your usage rights photographers need to decide if they want to take a stand on the issue, but many want to try to play the game both ways to see what's in it for them. There is no unified voice here. And the free image sites will just kill off micro, yet people still donate hoping for "exposure", and it's really the biggest joke going. You bought a camera for a thousand, another 5 hundred for a lens, and you are satisfied with your image being worth nothing? Gimme a break.

Good you got your image down. That the agency name was not correct bothers me - I would look into that a little. It could also have been a mistake in naming on the part of the blogger so don't overlook that possibility.