Not of a fan of other players being able to jump in to my game and kick my arse and take my stuff. Hasn't happened yet b/c I'm still early and don't really have anything, but I can see that making me rage pretty hard.
I wonder if I show offline if they can still do that. Maybe I'll just play offline
Played my first playthrough offline so I could learn the ins and outs. Second playthrough was online, and let me say, it was exhilarating. There are only 2-3 areas that are hotbeds for invasion. It's so exciting when you see you're getting invaded and meet up with the guy. Very awesome. Online is also good since you can summon people to help you with hard areas/bosses.