Everyone says unique visitor stats don't matter at all. Maybe. Just had a squiz at today's and the jaw dropped. Too depressed to quote numbers but let's say it's 40% of the average.
Had a feeling the deathly silence on the Jeckyll Island post might augur badly and the way I've had trouble with Blogger in the last few days, loading and leaving comments on people's sites ... well, I half expected it.
Another possible reason is the awful grey weather [presuming you also have awful grey weather]. Another reason is maybe people's busy-ness. Another reason might be ...
Oh, I don't know.