So Twitter’s rolled out a new feature to beef up its SMS functionality. Now, immediately, this sort of begs ‘why’, as those with a smartphone tend to use a Twitter app, and those without don’t really use phone Twitter at all, but after having read how this works, it would not prove unhandy for the unfortunately-phoned gentleman. Seriously, can you imagine me tweeting up a storm on this thing? But the new ‘Fast Follow’ (which sounds like a basketball term to me, oddly enough) is unique in that it allows a user not to have to sign up for Twitter in order to receive tweets. Simply text “follow Username” to…