That being said -- In providing my patterns for free I am trusting that they will be used for personal, non-commercial, not-for-profit use. The blogging community is, in general, very supportive of the "sharing" mentality, and I believe that I have good reason to be trusting.
Occasionally I receive emails from other sewists who would like to use my patterns to generate a little income for themselves. I have always respectfully declined, with very few exceptions. An example of one exception was when someone wanted to use one of my patterns to raise money for a charitable cause. Of course I asked for very specific and detailed information, and made a decision based on that information.
Then there are the disappointing cases where I discover someone using my work for their own personal profit. I have discovered other blogs re-posting my tutorials on their own blogs, claiming them as their own -- even going so far as to use my photos! I have also discovered others selling items that are clearly made from my patterns, obviously without my permission and without giving credit for the source of the pattern. It is frustrating to find others making money from my hours of creative effort and design and passing it off as their own idea. Upon contacting individuals about this, I have been greeted with defensiveness and hostility.
After thinking all of this over, I have a few friendly questions on the topic:
~ If I "release" my patterns into internetland, is there really such a thing as "intellectual property"? Opinions?
~ I am aware that there are other bloggers out there who sell the rights for others to create and sell items made from their patterns. What are your thoughts on this? Have any of you done this?