Currently, there is an incomplete related content modules comparison in the Organizing content with taxonomy section. There needs to be a broader comparison added here that cover modules that do not just focus on taxonomy.
The discussion of similar content recommendation modules is happening at on the Taxonomy Drupal group.
TODO: migrate over modules into a comparison table
TBD: how to handle the table since it will be very wide... perhaps create categories?
Leave a comment or edit this page to get this documentation going.