In MyFlyerTalk, the UI of the Unsubscribe feature makes it far too easy to inadvertently unsubscribe from individual forums.

The “Unsubscribe” links are mixed in with the forum links, and it’s far too easy to click Unsubscribe instead of a forum that you’re trying to visit.

And unlike subscribing to a forum, where you (annoyingly) have to confirm your subscription, the unsubscribe feature kills off the subscription without any confirmation. A bit backwards, it seems to me: if you're going to require a confirmation, it's far more common to require the confirmation for deleting, not for creating. (I can't think of any app where I need to confirm a create but not for remove/delete.)

I’d suggest putting “Unsubscribe” in the Forum Tools drop-down, in the same functional area where you find “Subscribe.” And if you're going to have an unsubscribe link mixed in with the go-to-forum links, requiring a confirmation would be thoughtful.