I see that side-art has been mentioned recently on a couple of threads. It's something that I'm actually a bit anal on, and while I totally appreciate people can do whatever they like with their layouts, it might be worth getting some discussion going for the few people left who are still creating layouts.
Someone mentioned that they couldn't find the author for a certain DX layout, I forget which one.
Back 'in the day' it was quite common for a layout designer (or design team) to include either their forum nickname / username, and often the domain name of the forum they were 'affiliated' with.
For example, a layout from DAD would probably say 'DADsFME' prominently on the side-art. One from Pook would say 'DX'CELLENT'. Mine would probably have said whatever my name was at the time, and probably a link to Fruit-Emu (although admittedly I've released a few under different names).
Why include these details? Well, firstly, if someone wants to contact me about a layout, they know I made it and which site I'm on (admittedly this can change, but it can provide clues if nothing else).
Secondly, it's a pride thing. If I've put loads of work into a layout, I want people to know I made it.
Thirdly, including a link to a forum in the sideart means that if someone (god forbid) pays silly money for an emulation disc from eBay or similar, they may get directed here.
People sometimes ask about keyboard shortcuts for layouts.
I know some authors do this and some don't. I always - on my later releases - used to include keyboard shortcuts in my side-art, mainly so that if someone downloads a new machine, the information they need to play is in front of them. While a lot of keyboard shortcuts are obvious, some might not be and sometimes you can't use the mouse easily as you might need to press keys simultaneously (skill-stops and the like).
That's about it for the moment but I'd be interested if we could get some debate and things going.