If I had a nickle for every time I heard someone say, "I don't get Twitter.", I'd be very wealthy. But if I had a penny for every time I heard someone say, "Check out this cool trick I'm doing with Twitter.", I'd be even wealthier.
As people come up with more inventive uses for Twitter, the data stored in the service becomes more valuable. Twitter is no longer consumed with "I had oatmeal for breakfast". Instead we are stating to see "Lisa took her first step today: video here- http://example.com/video" or "OMG - my plane just crashed" or "500 error on server 2".
If you're using Twtter as a baby book, a diary, or even a server logging system, you start to get my point. Twitter is no longer confined to throw-away data. But it seems Twitter, the company, is so busy with their massive growth, that they just haven't managed to keep our data as safe as they could.
For instance, Search Twitter for "lose tweets".
It's not hard to find a user who lost a lot of their data. Now, this is a time sensitive link, and hopefully things will improve. (If you're reading this in 2011, maybe there won't be anything in the search!). But until then, it would be nice to be able to archive our tweets on our own.
Stay tuned...