Compute Freely was started to be a friendly jumping in point for people completely new to the concept of Free and Open Source operating systems and Linux distributions but otherwise have some curiousity about them.
Unlike some sites, Compute Freely did away with a lot of the technical jargon and pageranking to determine "popularity". Instead it presents some basic info about using Linux and provides a curated list of distributions that may strike a variety of interests or skill levels.
Unfortunately, I lost the domain computefreely(dot)org when I was on a hiatus and it lapsed without me noticing. The content of current website I do not endorse nor I am associated with it.