I've had this brought to my attention a few times, so I'm taking that as a sign that I need to update my policy on usage of my bases. All base descriptions available through my dA have been updated with the text below the cut.
I am generally lax with how my bases are used. SO, to cover any possible incidents:
Unless there is excessive abuse, lack of credit, or that my work has been appropriated for some use I haven't explicitly authorized, I am happy to provide whatever bases I choose to share for free. Pixel art is my hobby. I'm not looking to make it some insane cash cow by monetizing everything I make (unfeasible, anyway). I will continue to share my work, as long as it is available equally to everyone for free, and everyone shares it with each for free. Therefore, I am against anyone else attempting to monetize (for real money!) my work for their personal gain.
THIS HAS BEEN A PSA ANNOUNCEMENT. Thanks for reading!
[if you feel that what I wrote may have holes, please point them out to me!)
My bases are for personal use only, unless stated otherwise.
Use of my bases for any kind of commercial, or business, purposes related to earning currency with real value is prohibited. I will never be interested in providing my work for commercial projects.
You cannot use them to earn real money, or currency is bought with/exchanged for real money (e.g. dA points).
The ONLY exception is using them to earn fake currency granted by a service to be used exclusively within the limits of that service. Outside of that service, they should have no actual value, and their use use is not authorized by the service it is associated with. For example, Gaia gold earned via activity on Gaiaonline.com
You may edit or recolor my bases. You may not cut-and-paste, frankendoll, or reconstruct my bases using resources created by another user.
Do not claim these bases as your own.
You must include a link, or some string of text leading back to ichitoko.deviantart.com.
If you'd like further clarification, or have a question about a particular usage case, feel free to send me a note! I don't bite.
And if you're inclined to, feel free to show me what you've done in the comments!