Thanks Matt. I removed that block while I investigate, and will report back when I know more. It's obviously not our intention to leak any search results through us.
Edit: still reviewing to make sure, but it appears that it isn't sending the search term via us. In fact, that's why it is going through our server, to specifically strip out the referrer. This appears to be an optional setting in the Microsoft ad center that sends the keyword bid for that ad.
Edit2: that does appear to be it. If I take all your examples and append ssn to the query, ssn doesn't appear in the resulting URL. I'm guessing they just have broad match on for those terms. You probably know as well as anyone that the coverage in the query space for ad terms is pretty wide, so if you search for something near the head you're bound to hit something exactly. I also tried a bunch of other queries, and since this setting is optional a lot of times the advertiser didn't set it and so their bid term is not send back; this is the case for example if I search for google and up at https://www.google.com/chrome?hl=en&brand=CHFX&utm_c...
Edit: still reviewing to make sure, but it appears that it isn't sending the search term via us. In fact, that's why it is going through our server, to specifically strip out the referrer. This appears to be an optional setting in the Microsoft ad center that sends the keyword bid for that ad.
Edit2: that does appear to be it. If I take all your examples and append ssn to the query, ssn doesn't appear in the resulting URL. I'm guessing they just have broad match on for those terms. You probably know as well as anyone that the coverage in the query space for ad terms is pretty wide, so if you search for something near the head you're bound to hit something exactly. I also tried a bunch of other queries, and since this setting is optional a lot of times the advertiser didn't set it and so their bid term is not send back; this is the case for example if I search for google and up at https://www.google.com/chrome?hl=en&brand=CHFX&utm_c...