On Dec 5, 2017, RichA wrote
(in ):

Most of these sites have fine-print legal boiler-plate alluding to things
like this. Or not, if not, the guy might sue. But has no one noticed after
having dealt with a site, all of a sudden you get spammed by a half-dozen
other sites who could only have gotten say your email from the site you dealt
with? As for Dpreview and all other sites, I figure hundreds of little minion
are frantically going over data gleaned from dozens of cookies, desperately
trying to figure out how to sqeeze more money out of us.

https://www.dpreview.com/forums/post/60471676

It is cookies doing their thing.

The most common manifestation I see is with add supported sites such as
fujirumors.com when adds for a specific item, and vendor appear after I have
made a purchase, or search at Amazon, or B&H for the same item, and they try
to sell me something I have just bought.

For most sites I use an add blocker, but when I want to access the content of
the site, I just ignore the adds.

--

Regards,
Savageduck