You are allowed to use my pictures under the terms of SXC Image License (with restrictions, when present). Apart from that, all pictures except those that require written permission may be used at user option on Creative Commons Attribution ShareAlike 3.0 License http://creativecommons.org/licenses/by-sa/3.0/ Please send me a message where did you use my photo. I\'d really love to see that they are useful! Some of photos are not taken by me, but other people: my wife Iric, my brother-in-law Mateusz or proffesional photographers (published here with permission): pay attention to photo description when crediting the author. Happy sharing!