pontifex - 1:59 pm on Jan 8, 2011 (gmt 0)

my spidey senses are tingling

that is actually very funny :-)

from where I sit and watch: End of October things turned bad. 10-15% traffic loss for me, after I recovered fully from Mayday end of June and traffic was nicely going up since then. November and December looked like "throttled" and right after Christmas, the site was back to the pre-20ish of October level.

They are shuffling the SERPs around. Yet it is hard to say if it is a major algo change or just the usual tweaks.