Finally, all of those e-mail notifications you get fromFacebook might become useful, as it appears that the social network is testing functionality that lets you reply to status updates (and conversations you’re involved with via others’ updates) via e-mail.

n addition to being a useful functionality, this is actually a fairly significant strategic move by Facebook, as essentially they’ve decided to sacrifice pageviews (by not forcing you to log in to comment) for conversation. In the long-term, that’s probably a smart decision.

The feature is straightforward. Anytime you get a notification e-mail about a comment on a status update, a photo or a wall post, you can simply reply via e-mail and the post will show up on Facebook. The social network is able to filter out unrelated text like your e-mail signature.