I get this too....it's well annoying. It's not based on my search history...as I'm full incognito via a virtual box. It's happening on any browser
A lot of people didn't / don't like the SB pop up either and while I agree whenever I see the London TS pop up I think "WTF" and close it down we need to remember that it's paid advertising which helps to pay for the site to be run
If there wasn't paid advertising then all members would need to start paying or new members who already pay a yearly subscription would need to pay more which then puts more people off and eventually the site goes downhill and dies
Asking many of the older members to start using Bitcoin to pay will IMO see many of them simply not bother due to struggling with the dynamics of doing it which again damages the site
It's a necessary evil which we have to put up with but at the end of the day 1st world problems etc