The thing is that blogging in itself encourages more organized thinking about a topic. When you go to write a blog entry, you inevitably find that what was in your head is not nearly as coherent as it needs to be in order to write it down.  Writing it down forces you to put your thoughts in more order. Do it enough and your thinking naturally becomes more organized in general.  You know, like programming does for you.<p>So blogging in itself does have some value.  Tweeting only has the value of forcing you to select what seems most interesting. Which is still of some value.