To me some kind of "mission statement" would be good, so I know what's the purpose of the blog.<p>The homepage starts: <i>"The site is divided into a multitude of collections and tags, accessible from the left navbar and from within posts ..."</i> which tells me nothing about how the blog is useful to me.<p>And the linked article starts: <i>"Several terms need to be clarified mathematically to appreciate the large sets of ..."</i> which also doesn't tell me "what is this about? why is this good for me to read?"<p>I suggest: Try to put yourself in the mind of the reader. The first thing s/he wants to know, is (I think): What is this blog / article about? What do I gain by reading it, how is it good for me? — If those questions aren't answered quickly, s/he will leave. (I think.)