I am interviewing a lot of people. I look very suspicious at these kinds of moves to try to impress me.
I don't necessarily ignore, but I try to figure out if this is some kind of shallow engagement.
It impresses me if you can stick to something meaningful and do it regularly for years but you can just as well hurt your chances if you propose 5 simple commits to random projects on Github to be your greatest accomplishment.
A blog about programming is not going to impress me if you are still junior engineer. Rather, it is worrying. I always remind people to learn something first before you try to teach other people.
I will still want to see you code yourself out of a paper bag.