Both Green Car Congress and The Energy Blog appear to have lost all material newer than December 10. Other energy-related blogs may also be affected. There are no obvious notices of outages on the typepad.com web site.
More on this as it develops.
UPDATE: Six Apart confirms the outage and that this sojourn back in time is intended to be temporary.
UPDATE 2: The problem has made Slashdot.
UPDATE 3: Things appear to be more or less back to normal.
Visits since 2006/05/11: