proxies in the server logs
when I'm looking at my server logs I see a lot of google proxy activity and very little real web sites. Should I be worried that most clicks on the web site are from robots draining my daily budget? If yes, how do I prevent these?
Re: proxies in the server logs
These clicks are actually from sites on the display network that are part of the "premium" publishers group. They have a unique option to allow themselves to be anonymized so that their URLs cannot be targeted by competitors (as well as many other valid reasons).
These clicks are actually coming from, what Google classes at least, the highest quality advertisers who also have a lot of inventory and a broad scope (think Walmart, CNN... these two could actually be in your list, you just can't tell).
Honestly, I'd prefer to see my placement report 100% filled with these than some of the other nonsense that Google allow onto their AdSense program.
Unfortunately, there's no way to see which sites they are. Just keep an eye on them and exclude/block any that are not performing for you. Just like any other sites.
Hope that helps.