I know I could get credits by responding to and giving "invites." But, if I click on one, what happens? Do I have to chat while I play? Do you just take turns? What if you're not online at the same time? Just what IS it an invitation to do? Pick a course? - Play head to head? - or do I hafta be "social?" I kinda like playing fast, alone, but if answering an invite would still let me do that, I'll bite. (Like in real life golf, I don't chat much either, and just play golf - except at the 19th hole, of course). ;-)