jimmychuang - 6:22 am on Feb 2, 2008 (gmt 0)

Why I say those sites drive low quality traffic to my sites?

Because I check my weblog, I found many garbage sites with no content, only have a search box in index page.

I know they use xml and drive cheap traffic to their sites.

And after I got a large number of clicks in December.2007, my eCPM suddenly dropped down to very low in early Jan.2008.

The number drop down too fast, from avg 0.6 per click to 0.2 per click. Recently, I got many times about 0.09 for 4 to 5 clicks.

It's crazy. It's definitely not a normal situation.

I created my friend's sites, and he doesn't use any 2 tier PPC to drive traffic, and he still got $0.8 to $0.9 per click.