a training or skill course that could supplement a pilot's license?
I suppose that much depends on your type of flying. For smaller operations, what has been said, being a qualified mech seems to help a lot. For airline type stuff, I've no idea... presumably getting on as many courses as your company offers? Other than that, perhaps language training or a good management course (most of the ones I've seen are absolute rubbish though).
I'd say you're good for a little less than 24 hours
The problem with these guys with only a handful of posts is that it makes you wonder if they're worth relegating to your ignore list as they'll probably be banned/go away soon anyway. My ignore list is already a couple screenfuls long as it is