I hear where your coming from, Skelleanox. The thing is, some people just want short-term roleplays, or lose interest quickly. But if they just disappeared without even telling you they were leaving, then there's a problem. But like Passeh said, engage them in conversations and other fun stuff. Best wishes for your pack!
Ew, I really don't like people like that, though I can't say that I haven't done it before. uwu I did stop doing it though, and am horribly picky about role-plays because of it.
Another thing I really don't like it whenever the leader disbands the group, and doesn't even have a reason why.
I remember this one group that I spent more than a week trying to work on the site and whatnot for this one group, ended up with ten people and all left as soon as I went off to bed. I was infuriated, and I can't say that often.
-Wolfie