[thasmin]

A dropdown box on Facebook would do, but nobody can put it there so some people decided to go with Plan B.

[ErrantX]

but nobody can put it there

Except for Facebook. And, err, they did - quite a while ago :)

[gbhn]

I don't remember the source, but "it's easy to take a reservation, the hard part is filling it." Meaning, of course, that Facebook privacy has continuously eroded, so some (myself included) have no faith that such a dropdown has any persistent effect consistent with what might be inferred by what is written on it.

[defen]

Seinfeld