Maybe a PPC FAQ would be a good idea, although at the moment there's not too much to put in it.
So far I haven't spent that much time skinning on the PPC. I've played with setting up some custom control screens, and getting buttons to control macros I've set up in the event manager and it's all worked well, but they've just been experiments rather than anything of substance. I've been really busy building a media server and up until now it hasn't left me any spare time.
However I finally finished our media server last night, so the next step for me is dividing my time between populating the server with our CDs & DVDs and designing the interface for our system - which means getting the PPC stuff to work properly.
Mfan has already done a lot of great work with his PPC translation of Colby's skin so he will be a good source of information, and if Jowaldo ever posts the next version of his skin there's going to be plenty of idea fodder there to use.
Another thing to bear in mind is that because XLobby is so flexible, each person who creates a skin has designed it to meet the requirements of their own situation.....and every one is different, not only graphically but functionally, so the likelihood of getting someone's skin to match what you want to do "out-of-the-box" is really quite small. I think the best approach is to see which of the skins produced comes closest to matching your own requirements and then make whatever alterations are necessary. I'm sure I'm stating the obvious though.
Anyway, as far as the XLobby PPC client goes, I think if we could get Steven to get the bugs out of the auto-refresh and support for hard buttons in place I honestly believe the floodgates will open and we'd have the ultimate HTPC frontend and control system at our disposal.
Roscoe