Last week Blogotariat experienced a major malfunction with the aggregating process. That has since been fixed, but somewhere along the way some feeds have been dropped from the system - that may have come about from upgrading the aggregation software.
Anyway I'm slowly adding missing feeds back into Blogotariat. Let me know if I miss some.

The good news is that Blogotariat has been entirely stable since moving hosts and unique visitor numbers have been doubling for the last three months. This means that post rankings are developing a proper life of their own without my input.
Blogotariat's web host have been upgrading and migrating servers which is always good news. However they did not advise me that the method I was using to update the feed items had been deprecated and was no longer functioning. I had to rely on manual updates for the last few days. Not being able to get through to the web support service for a few days was also a worry. I finally managed to talk to a support person this morning who came up with the answer for me.