Resource for evaluating past stock recommendations?

Is there anyone (especially online) who's collected reasonably well-informed stock picks from, say, 2, 5, or 15 years ago and explained why the recommendations did or did not work out? Is there a better way to track that stuff down than hunting around for old articles on financial websites? It seems like making the effort to learn from mistakes in the past would help guard against over-optimistic, irrationally exuberant picks today.