I think an instant messenger program such as AIm would work a lot better, I somethimes catch people, however it is not reliable.
Yes, I think at the moment there is no real good way to see if another cutie is online - but you could make an appointment in the personal section :-) maybe
That's what they have on Facebook, but I don't like it because then everyone knows that I am sitting at my computer and not working etc lol,
I don't think so. You can look at posting and see how long ago a comment was made.