What would be useful is a site that collects links to CS papers, then for each paper lets users (who presumably actually read that paper) comment on it, and/or rate it. Or does such a beast already exist?
Mendeley [1] does some of what you're talking about. Primarily it's a way to organize your own collection of papers and access them from native or web apps on various devices. It also has some social features, like connecting users with similar interests and sharing tags on papers.
Its "Computer and Information Science" category [2] lists the papers with the most "readers" which I think in this case means "Mendeley users who have added this paper to their collection". Its most read paper in that category is the MapReduce paper [3]. Oddly, as I look at it now, I don't see a feature for rating or commenting on the paper, which could be a useful addition.
Of course, the authoritative method of rating papers is citations of other papers, right? That's what led to PageRank after all, and most of the main sites for finding papers have used citation counts for a long time.
oops. Correction: The MapReduce paper doesn't have the most readers in Mendeley. I just saw it at the top of the "Popular" list on the computer and information science page. So they must have some other way they're sorting that list.
