photo posts (often) do not update twitter

posts with pictures often do not update twitter. Sometimes I think it's because I forget to clear the body text in my email, and other times I think it's just a fluke, but I see it happen quite often where I'll post a picture while at a location and that doesn't end up as a tweet.

http://brightkite.com/objects/38606b5... is an example of one that posted to brightkite but never flittered it's way over to... um... twitter.

k_bear