I get a lot of questions about using this image (it really was a fluke that it came out so well, the very well lit window should take some of the credit!). Please see this page to tell you what you can do with this image: creativecommons.org/licenses/by-nc-nd/2.0/. Basically, like all of my photos, it's available to use non-commercially as long as you don't change it and you credit me. Please ask if you have any further questions though. I'm not a professional photographer but I'm very flattered that this image has become very popular.
Finally decided on this ball of yarn for January's Monthly Scavenger Hunt. it's Adriafil Globe.