I think a lot of those offers are based (or come from) Google Ads. If you visit a site/page, you're likely to get ads, promotions from that site afterwards. I've looked into sites, and within a day or so, I'd see ads, or offers from, or concerning those same sites.
Now, with that said, why the h*** you looking at that cartoon golf site?
(Yes, I have looked, too. But, it's a goofy site and a bigger money-grubbing game than WGT)