A section of a blog page that contains a list of links to recommended blog sites.
A blogroll contains links to blogs that the author recommends. These blogs are included in the list because of one or more of the following reasons:  their relevance to the topic,  as a matter of curiosity or interest from the blogger’s viewpoint, and  the blogger’s participation in a link exchange program.
see also: Blogging Tools
17 Brilliant Bloggers Talk About Blogrolls and Link Love
BlogWorld (February 18, 2011)