Do you use them a lot? I do. I love 'em. Preferrably personal ones, not asking me to do something. I don't like those ones. Just... tell me what's up with your life or something, and we can go from there! I like getting to know people in a more private situation where possible and I don't often get that chance with a lot of you who aren't around at the times I am.
I'm in a majorly social mood lately and I'm stuck at work, so this will basically have to do. I'm pretty sure that when I'm home I'll probably end up busy with various other things which doesn't help much, either. I also love phonecalls, but that's another story. I use PMs for randomly catching up with people, organising meetups, sending information to myself so I can pick up on it when I get home from work (sort of like a notepad for my account at EoFF), whatever. I don't like visitor messages as much because I prefer privacy, but that's just me, I guess. I still use Visitor Messages for quick things like saying when it's someone else's turn on Triple Triad.
Talk about PMs and how often you use them, what you use them for, etc.