I had this idea a little while back, but I've only just got around to making a mockup of it...

The idea is that when you choose a category to submit to, if it's the first time you've posted anything there, an information screen like the one shown pops up. The box will only allow you to select that category once you've read through it, ticked the check box and then clicked OK.

Obviously, this example is for the anthro gallery, but it could be applied to all of them (except of course Film and Animation, which probably don't need it!).

A random example image taken from the gallery's recent Daily Deviations is shown at the top right of the box (without the big "EXAMPLE" label!) to provide a visual aid as to what is supposed to be in the gallery. Why only Daily Deviations? They're the most likely to be correctly categorised! The gallery director(s)/moderator(s) are shown at the bottom of the box as well, in case the deviant needs to contact them for more information, as well as making the introduction to the gallery just that little bit more personal.

The text in the box would be fully editable by the gallery director(s) for that gallery, in case (for example) they find they need to add to the examples of things that don't belong there, or to edit the gallery description.

Edit: It's also been suggested that it should be shown every time, and a "Do not show this again" checkbox should be added (suggested addition from =eldris and ^stigmatattoo)

Aaaaaand that's pretty much it! Let me know what you think! Should this be implemented and are there any tweaks that should be made?