I do agree as a general news medium that will point you to an article, then Twitter works well.
On the other hand, I subscribe to a bunch of photoblogs that would not work well as a Twitter feed. I also subscribe to a bunch of blogs that create their own unique articles of content. That is just not something that can be put into 140 characters.
Generally speaking, I use twitter as a way to come across content not already in my RSS feed. If an article passed through Twitter is from an interesting author, I may add that author to my RSS feed for future articles.
On the other hand, I subscribe to a bunch of photoblogs that would not work well as a Twitter feed. I also subscribe to a bunch of blogs that create their own unique articles of content. That is just not something that can be put into 140 characters.
Generally speaking, I use twitter as a way to come across content not already in my RSS feed. If an article passed through Twitter is from an interesting author, I may add that author to my RSS feed for future articles.