sans_cosm_ discovered an issue where tweetie puts an actual
<text>...</text>part of the xml, which wasn't being handled gracefully. this has been hacked around.
also, there was a leftover bit of debug code that was forcing the lj post status to have always succeeded, which could have grossly defeated the error-checking logic that makes it not bump
since_idif the tweets never make into a journal entry. this has also been fixed.