I think it's malware that hijacks your search by injecting their affiliate/cse-id. Any click on ads will get them a kickback and it's in their interest to get t

I think it's malware that hijacks your search by injecting their affiliate/cse-id. Any click on ads will get them a kickback and it's in their interest to get the CTR as high as possible and they can accomplish that by removing all the indicators (or as much as they can) that these are ads.