As long as celebrities give us news through Twitter — even if it's news that shouldn't be news or doesn't seem like news — the medium promises to flourish. However, could the beginning of the end be on the horizon? Sessilee Lopez tweeted twelve hours ago, "sorry twitter but this is my very last tweet ... we had some good times and bad but now our relationship is over ... " And this from a girl who tweeted twice within an hour to say she had landed in Milan. [Sessilee Lopez/Twitter]