site:mycompetitor.com means the user did a search to restrict the search results to those on the *.mycompetitor.com domain. It doesn’t necessarily mean that the user is from mycompetitor.com.
However,if you suspect competitor click fraud, you have the IP address – you should be able to exclude the IP in your Adwords settings (Tools | IP Exclusion).
I meant, go to Visitors>Visitor log, look up the visitor that you mention, you will see Google + the keyword detected, which will be linked to the exact Referer page. Can you copy paste this URL here?
It looks like your adword search shows on up on a search for “site:mycompetitor.com computer repair mylocation” and someone clicked it. I recommend setting up your ad so it doesn’t show up on these keywords.
[quote=matthieu]
It looks like your adword search shows on up on a search for “site:mycompetitor.com computer repair mylocation” and someone clicked it. I recommend setting up your ad so it doesn’t show up on these keywords.[/quote]
Pardon my ignorance, but how would we stop this from occurring over and over again for other keywords, and how would I set up my ad to effectuate this “block”? What if someone has a huge array of IP’s?