I generated placement performence report and I see, there're some websites (like myspace or dating sites) with passes a lot of clicks to my site with very low CTR (like 0,01%). I'd like to know something about quality of those clicks. I'm wondering if there's any possibility to check my conversion rate or time spent on my site. Is it better to block sites with very low ctr or leave it ?
Sure, there is Google Analytics that you can install on your website. It will track those Google Referrals. You will be able to see both bounce rates and average time on the site. Assuming you are heavily targeting your ads with proper keywords it should be relatively good.
hmm.. the only thing i see is: pagead2.googlesyndication.com (referral), so still i've no any information about adsense sites that brought users to my site.
Look at it from googles point of view. Are they going to show and ad with 0.01% ctr or 0.02% ctr first?