Found this by coincidence: a blog using one of my photos as the header. Feels good and looks pretty nice. BTW: it is perfectly OK for them to use it. My photos are on display on my Flickr account and are usually under a ‘Creative Commons’ type of copyright. This means that the photos can be freely used by anyone as long as my name is mentioned along with it, and if the photo is then not protected, sold or otherwise hijacked. It has to remain under a CC license even when altered. The blog gives credit to me on the footer of the page, so everything is perfectly OK.