webcentric - 10:05 pm on Aug 10, 2013 (gmt 0)
Lately, CPC seems to start the day strong and then dwindle off during the day. Then it might pick up a bit later in the evening for awhile. It feels like advertisers are targeting early morning and evening traffic. The junk ads seem to dominate from late morning to early evening or later. My traffic is virtually all US traffic and comes from good sources i.e. mostly organic search and direct with a spattering of natural referrals thrown in for good measure.