Just to set any minds at ease after the initial shock:

The link I posted is just a generic bad id link that ends up redirecting to your own Facebook profile if you are currently logged into Facebook. Anyone logged into Facebook will see their own profile.

The link joering2 posted OTOH is actually to my Facebook profile. But:

A) I don't really care (anything I put on my Facebook profile is assumed to be 1000% publically available information anyway).

B) Turnabout is fair play