This image was produced by me, David Castor (user:dcastor). The pictures I submit to the Wikipedia Project are released to the public domain. This gives you the right to use them in any way you like, without any kind of notification. This said, I would still appreciate to be mentioned as the originator whenever you think it complies well with your use of the picture. A message to me about how it has been used would also be welcome. You are obviously not required to respond to these wishes of mine, just in a friendly manner encouraged to. (All my photos are placed in Category:Images by David Castor or a subcategory thereof.)
This image is used on a user page of a Wikimedia user and is stored on Commons according to the rules set out in Commons:Project scope#File in use on Commons only: the uploading of small numbers of images (e.g. of yourself) for use on a personal Commons user page is allowed or Commons:Project scope#File in use in another Wikimedia project: the uploading of small numbers of images (e.g. of yourself) for use on a personal user page of another project is allowed as long as that user is or was an active participant on that project. If the image ceases to be used it may be eligible for deletion as it may have no educational purpose.