http://search.twitter.com/search?q=%40jkrums+%2B+article
I noticed this a while ago. The guy who shot the TwitPic-seen-around-the-world (Flight 1549 on the Hudson) seems to siphon off some HN links and pass them off as his own 'deep web' finds. In his defense, he doesn't change the title - so he's not trying to hide it (totally).
I guess I'm a little annoyed that he is using HN as a tool to generate authority links (e.g. feed interesting articles to his twitter followers that will increase his twitter "network"), without participating in the conversation at all (maybe he is anonymous). Also, he is running the link through Adjix to track his referral count. Yes, there are many lurkers on HN (I used to be one).
On the other hand, by ambiguation of the source (HN), he is protecting us from an onslaught of News.YC new readers.
What do you think? I bring this up because I think the top Twitterers feel obligated to supply interesting links to content to their followers. As a full disclosure, my highest-point submission ever - 'Best Paper Airplane' was from a Guy Kawasaki tweet (I don't follow him - it came up in Summize).
Really, maybe I'm making much ado about tweets here. If no one responds to this (as I presume), I will have my answer (it does not matter).