] Most Instant Messenger users broadcast when they sign on,
] sign off, go idle, and flag themselves as away. This
] presence information is typically innocuous, useful for
] knowing if your buddies are available to chat. But when
] monitored continuously, over long time periods, those few
] signals tell a lot. This website lets you record and
] analyze anybody's IM activity.

Somebody is watching you... for someone else.

IM Watching.net