Because Twitter's not just for twits ;)
As one of the partners in Tweetake, we love to see people promoting our service – but I have to say that the cartoon accompanying a post I found today really made me smile:
If you use Twitter for business, then it could be important to you to be able to backup your followers if, for whatever reason, they were lost.
I know I wouldn’t like to fall off the edge of the Twitterverse and have the people following me wondering where I had got to.
Play it safe – back up at Tweetake 
A quick round up of morning Twitter news
Matthom got so fed up waiting for Twitter to create an archive facility that he created his own – you can read more about it on his blog. He says:
Rather than updating Twitter directly, I will update via a custom app which copies each update into a local database, as well as updating on Twitter. To my followers, nothing changes. My updates still come across in real-time as they are sent.
He still hasn’t figured out how to get his old Tweets back, but we have no doubt he’s working on it!
I'm happy to use Increase Sociability.