Before I went to Sweden I deleted all my Tweets and unfollowed everyone much to the internet's surprise!
It was a great move. Not gazing into a deep pool of shit for a significant proportion of your day is actually a really good thing.
I'd kept the account alive just to squat the name but today I tried to script unliking all my likes. It didn't go well. Due to some weird behaviour of the website I ended up sending notifications to loads of people. So I just deleted the account.
I feel like I should write some long boring post about why I'm done with Twitter but honestly I can't be bothered and it'd only repeat everything you already know about the crap platform.