Hi R/F. I understand and have thought of all those things. Thanks for taking the time to drop by. Yeah, it's a super competitive nitch, and there's a lot of click fraud (no Google doesn't catch it well. People just use proxies/proxy switchers and Google "can't help what it can't see" in my experience). However, we can see it using other programs and just patterns/search behavior. All that aside, I still have the same question and am looking for a solution because I know there are a lot of smart, helpful webmasters here: basically we're at our 500 IPs/campaign limit but need to add another 100 (wish we just had 2000 like Bing apparently has). Hopefully Google Adwords will consider this. We have 1 campaign only. I figured adding a 2nd campaign just to get "500 more" IPs to be able to exclude, if you think about it, won't really address the problem at all. Wondering if anyone might have any ideas that can help us in this predicament, because I have a list of culprits. I just can't add them because of the current max# limit. Hopefully someone will have a neat solution we haven't thought of. Obviously the simplest would be if Google increased to 2000, or even allowed it as a paid option, but as you can imagine, we're already paying way too much in ads because of invalid clicks that are not being caught because people aren't dumb enough to keep the same IP and understand the simple workarounds and time spent per page to avoid the filter.