The reason I don't blog as much as I used to is because nobody reads anything I write. The traffic is a joke. Thus is doesn't seem like a wise investment unless there is some ulterior motive (eg. demonstrate proficiency in some field).
Also anything I feel compelled to write about is generally something controversial, especially relating to politics or work culture, and it would be career suicide to write that under my real name. Therefore if I want to write anything that's actually interesting, I have to write under a pseudonym.
If I could bring anything back to the internet, it would be internet forums. Real communities. Reddit and HN serve their purpose, but there's no sense of any real community.