First, let us inspect a regular link. It is a piece of text (or image, but we are going for text) that links to your blog, and some of the factors that matter are
1. The address which it links to
2. The text of the link
3. The page rank of the page on which the link resides
Let us investigate this information one by one. First, you would obviously want the link to link to your blog, but to which page of your blog ? To an personality post or to your blog’s home page? Since your blog is a frequently updated website, it is always wise to build up all the links to point to your main page as an alternative if individual posts since they tend to be very time-sensitive.