Today is lousy, essentially, because I get so much traffic that does so poorly.
I really think it is the ads Google shows. I wish I could control that more, but I can't. I love how I can have a "custom" site but all I can do is just ban/remove more categories, instead of ALLOWING more categories than I have listed for the other sites. If you use the master "ban categories" list it bans categories for ALL sites. By making a custom site, you can just ban even more categories.
It's all insanely unintuitive and lame.
I don't know what it is. This one site of mine is repellent to clicks.