PG found some comments by long-time visitors to TPV that for some reason, became enmeshed in the TPV spam folder.
TPV has been receiving particularly large amounts of spam lately (as well increased numbers of hack attacks from various parts of the world), so, perhaps the guardians of the blog have become exhausted and a bit inaccurate.
All is fixed and the wrongly-accused comments have been approved. PG apologizes on behalf of his system, including its various servers and each of its guardians.