One of my major affiliate programs just threatened to cancel my account and keep the earnings because they say I was bidding on their trademark. I was not, plus I have the term and all variations as a negative keyword.
Well, after a bit of investigating, I found out that they were using Google Sponsored Links Search (http://www.google.com/sponsoredlinks), and indeed my ad was showing.
What the heck? It seems like Google is showing the ad because the display URL has the trademark word in it.
To make matters worst, even after I paused the campaign, the ad still shows.
A bit more digging, and it seems like Google will show any term present on the display URLs or the ad text, even if the advertisers are not bidding on it. For example:
These are terms that people are not bidding on, but google still shows the ads because they have the term in the URL.
This is crazy. Google, I DO NOT want my ads to show, period.