I have a two year old blog that ranks pretty well in Google for some terms. However, I just noticed that many of the individual entries (both old and new) are either not found in Google or are listed as supplemental results. However, the monthly archives are listed in regular results and rank well. So for example there's a post called "Widget Mania" and when someone types "widget mania" into Google the monthly archive with that post on it comes up in the results instead of the individual post which has "Widget Mania" as the title. Any ideas on why this might happen? Are the individual posts somehow being penalized? The blog itself has a PR4 and doesn't appear to be penalized in any way. I'd love for the individual entries to rank.