[bigiain]

Sure - but we (or Facebook) need to weigh up whether doing this which may (or may not) help in some cases is of greater benefit than not doing this because in some "sufficiently abusive" cases it won't work (or may even me harmful). My gut feel is that it's a good thing, and that the benefits against "snooping grade" abuse is positive and way more common than the potential downside in "sufficiently abusive" cases. It's not a requirement that Facebook fix everything to "worst case abuser" standards before providing additional features or utility to other users of their site. (Lets face it, if your postulated "sufficiently abusive adversary" is the threat model, you've got bigger problems to solve than securing your Facebook account - and Facebook can't help you with those in general...)

[patzerhacker]

It's a good thing. If the take-away from my post was that it wasn't then I'm sorry for not conveying that more up front.

Again, I'm responding to the grand-parent post that said this would be good for abuse victims. It's not all that great, but that doesn't mean it's useless.