# Why did joining Facebook create ads for me?

**URL:** <https://boards.straightdope.com/t/why-did-joining-facebook-create-ads-for-me/792711>\
**Category:** In My Humble Opinion\
**Created:** [August 3, 2017, 6:57pm UTC](https://boards.straightdope.com/t/why-did-joining-facebook-create-ads-for-me/792711 "2017-08-03T18:57:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mixdenny](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mixdenny/32/2962_2.png) [@mixdenny](https://boards.straightdope.com/u/mixdenny)\
**Post date:** [August 3, 2017, 6:57pm UTC](https://boards.straightdope.com/t/why-did-joining-facebook-create-ads-for-me/792711/1 "2017-08-03T18:57:47Z")

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I have been using Adblock Plus with excellent results (Firefox 52.0.1 and Win XP). I have never had an ad on the SD site.

I joined Facebook about a year ago to be able to post photos to one history page. Then I quit FB. Recently I have been trying to track down a historian who has posted on various blogs and forums I am interested in, they they are all dead pages and none of his old emails work.

He is on several historical foundations on Facebook. So I rejoined and sent a friend request. Haven’t heard anything yet. I can’t find a way on FB to just write to him to explain who I am. You have to be friends first? Is that right?

Anyway. Instantly, where ever I go on the Internet I am absolutely inundated with ads. The SD is the worst. Top ads, middle ads, bottom ads. Even if I stop the page from loading some pages reload by themselves.

WTF? How did re-joining FB allow all these ads to sneak by Adblock? How can they tell? Why is Adblock defeated? I can create a filter for some of them but each time I go to a new page a new bunch crops up.

Dennis