Reddit is a web site that ranks web pages by user votes. If you login and vote yourself they will develop a pattern of what you like and can show you a list of the pages you are likely to enjoy. I believe this is done by matching your likes and dislikes with others. When showing you a list of recommended links it gives some importance to up votes by anyone and more priority to up votes by those that have shown a tendency to like what you do.
I have recently setup a management sub-reddit (a distinct topic-focused-area on the management improvement topics covered in this blog). If you sign up you can not only vote on the links displayed but add new links (that then will be voted on by others). I think Reddit does a very good job of using social aspects of the internet to provide recommendations that are worthwhile (I have used the site for years). The success of this management subreddit depends on reaching a critical mass of users. So I encourage you to give it a try and vote on links you enjoy and add new articles, web sites, blog posts… The benefit of this subreddit will grow as we grow the number of participants.