I've finally gotten around to cleaning up a few issues that have been pending for probably 2 years:

Duplicate DSiPaintings
This is the issue that arose when someone wanted to frequently save a painting, while working on it. As we all know from crash-friendly computers, it's a good idea to save whenever you can. As long as the saving doesn't happen during the file save process (which is a fun one when you lose a week of work!), you're good for when a crash does occur. Along these same lines, those of us who may spend an hour or more on a single painting like to save several times, in case the DSi battery dies; the Internet connection goes out; or the browser session expires.

The problem with this was that each save created a new instance of the painting, littering the gallery with duplicates, triplicates, etc. Since DSiPaint was the first such Web app I had made, the code was older and didn't properly handle the issue. Newer products, like 3DSPaint and TMJ Tiler already had a solution built into them. I just needed to port this over to DSiPaint.

Now, whenever you save the same painting multiple times, it just updates the same file. If you want to start a completely new painting, either reload the page, or exit and re-enter DSiPaint.

Account Cancellations
I don't know why anyone would want to leave such an awesome community, but I should probably keep such an action accessible at all times for those who don't know what they are missing.

Originally, cancellation was achieved by entering one's email address into the cancellation field then doing it again on page reload. That confused the poor, misguided souls. To make it simpler for their evasive actions, it just takes entering "CONFIRM" into the text field. (Danger, Will Robinson! THERE IS NO PROMPT AFTER THIS!)