@ PSN experience: I actually like it better than I liked Xbox Live during the period I had it. Though I never cared at all for voice-chatting while playing anyway. I just prefer written messenges, really.

I also have more titles for my PS3 than my 360. Generally, I play much more single player games than multiplayer games too. And for those, instant-chat with people isn't anywhere near as important.

Disgaea 4 was the first game that I quickly started make PSN friends in. Being obsessed with challenges and loving the map-making that D4 introduced to the series, me and another guy ended up having a battle of "making the most difficult map", where the winner would be the first person to make a map that only they themselves could clear. We talked a lot through messenges during that period. Occasionally, others would try our maps too and sometimes give our maps terrible ratings for being far too difficult and masocistic, which was hilarious. I met a couple other cool people through Disgaea 4 too, many of which have tried out less popular RPG titles that I enjoy myself.

Then there's Dark Souls, which I've met another bunch of people in and had lots of fun online experiences in. Other than that, I mostly just casually write messenges about 1 player games that others are playing as well and stuff like that, really. So yeah.