Lost, for better and for worse, is doing its best to push the boundaries of transmedia experimentation: a few weeks ago they announced plans to publish a book, which would figure into the show's plot(s) later this season. Now, according to the Hollywood Reporter, they plan to launch Lost Video Diaries, a series of 20 cell-phone exclusive episodes:
"Titled 'Lost Video Diaries,' the series will introduce two characters said to be stranded alongside the cast featured on the primetime version. As fans of the series know, not all of the dozens of survivors of the fictional plane crash depicted on the series get screen time. While the story lines of the pair will be new to 'Lost' viewers, the events depicted in the primetime version will inform their story lines... A tie-in connecting broadcast and mobile versions also is being considered."
I'd be excited, except that (a) I'm still not convinced that people are chomping at the bit to watch television on screens the size of post-it notes, and (b) none of the cast or crew from the network program seem to be "directly involved." (Cuse and Lindelof "have oversight," which I find less-than-reassuring.)
As the New York Times reported a few weeks ago in relation to the mobile episodes of 24, I suspect that most viewers aren't going to get excited about watching no-name actors stand in for the stars they've grown attached to... unless they're clever enough to occasionally emphasize crossover, with plots from one series emerging in the other.
At the very least, I look forward to watching these when they surface as extras on future sets of Lost DVDs.