My professional interests are entrepreneurship, programming, finance, and mathematics. I'm using this account for those interests.|
In order of your likely interest:
https://twitter.com/NathanWailes <-- Tweets are strictly focused on entrepreneurship and programming.
My open-to-the-public personal wiki pages on entrepreneurship: https://nathanwailes.atlassian.net/wiki/pages/viewpage.action?pageId=33390778
http://www.nathanwailes.com/blog <-- Posts are fairly strictly focused on entrepreneurship, programming, and yearly-ish "What I did this year" posts.
https://www.youtube.com/nathanwailes <-- The topics of my videos are all over the place: entrepreneurship, finance, videogames, screencasts of me programming, videos of me reading books, etc. When I'm going to be creating more than one video on a topic (say, a video of me reading a book, or a programming screencast), I usually create a playlist and set videos after the first one to "unlisted", so as to not spam my subscribers.