Great article. I know I do a couple of those things with my blog, but there are many things on the list I should be adding to help generate new readers.
Jennifer del.icio.us is a social bookmarking site where people can share sites and pages they've bookmarked or found useful with other people. It's not a site I really visit, but the idea is that if someone likes one or more of your pages and they bookmark it at del.icio.us then it puts your page in front of a lot of other people who might never have seen it as well as coming with recommendation just for having been bookmarked there.
By the way isn't their domain a great creative use of a domain in general. The domain alone has generated so much marketing though I'm sure there are many who can never figure out where the word gets divided by the (.)s