If you tell me something I don't know and want to know I am happy for it to be 'self-serving'. Some things I would like to know (disclose what you are comfortable with): how to you monetize? How do you acquire users? How much (assuming you buy traffic)?
Right now, I don't monetize much. I occasionally add in an Amazon affiliate link.
I acquire subscribers in many ways, but I've bought very little. I spent $20 on a reddit ad which netted me (I think) 3 subscribers -- that's 100% of my marketing budget to date. The most effective ways:
* I syndicate posts to certain blogs, asking the blogger to plug the newsletter in exchange for letting him or her run the whole post for free.
* Word of mouth and asking readers to tell their friends about it.
* Links to individual issues, which have on them subscription boxes and links to the archives.