It'll be about a year and a half ago now (at the very least... -prods-), but a Anime-Themed Forum that I still frequently visit had something similiar happen to some of the members. Apparently, this guy would add you on MSN Messenger, start a Conversation with you and then some how hack into your Hotmail account that way. o.o;; Apparently. That never happened to me and I un-installed MSN Messenger straight after I heard about that... you can never be too careful after all.
That and it wasn't working right on my Windows 98 anyway. Meh. I haven't touched an Instant Messager since hearing that. -nods paranoidly- Maybe it's something like that? Meh. Or maybe that was a rumour/joke; sometimes it's hard to tell with the Site in question.
Gah.
If it's true, I feel sorry for those people that after years of hard work got their accounts hacked into. -prods-
This is why I don't visit the Neoboards... it's good to be anonymous. -crawls under rock hiding from hijackers and whatnot-