Facebook has just rolled out the ability for users to reply to comments through e-mail, a feature it began testing last month.
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.
As we noted in our previous coverage, this move is about more than meets the eye. While it’s a useful feature, it also means Facebook is sacrificing short-term pageviews (by forcing you to log in) for more user interaction.