If you mean creating a blogroll to show other blogs you recommend, that is no longer so effective now that mobile phones are most of the world’s default interface to the internet. Themes for common blogging platforms like Wordpress generally hide the sidebar, blogrolls included, on mobile.
Agreed on this. Blogrolls are okay for people wandering the blogosphere but you only get so much from "check out this peer of mine". Topical links (here is another informative post about x) are much nicer for a reader who is already reading about x. And link blogs are great because they endorse specific content from someone.
