I think that the largest problem with CUUSOO projects is that they are "products" that someone is trying to sell. If you announce a new CUUSOO project, it is first and foremost a "product", than a MOC. And because this forum is aimed for sharing your LEGO creations, not sharing your LEGO products, CUUSOO projects in my mind don't really work well. I think Eurobricks guidelines said my thoughts were well:
CUUSOO: If you have a great MOC, that is also a CUUSOO project, you may present it on EB as you would any MOC, with a single link to the CUUSOO entry. Make the title about the MOC, not the CUUSOO business; don't be too shouty, and it is likely to be tolerated. You need to be thinking: 'I want people on EB to see my MOC and comment on it. If they like it, perhaps they'll support it on CUUSOO', rather than: 'I want CUUSOO support! If I post it on EB, perhaps more people will vote!'.
Regarding the separate discussion category that Whatsidewjw mentioned, I don't really see the point. Whether or not you are mentioning about CUUSOO in your post, you are still showcasing us your MOC and there is already very good place, i.e. "MOC Announcements", to post a thread about it.