I usually publish all my photos under a Creative Commons Attribution License (look at the license information of the specific photo page, to be sure). So feel free to use my photos under the terms of the respective license, usually that means you can use them without asking me as long you credit me.

And please drop me a note (with a URL/screenshot/etc) if you used any of my photos. I would love to know where my photos are being used :)

You can also get some of my photos in a better quality from: www.photocase.de or www.istockphoto.com.