Those hijacking pop ups..

[grampahol]

You've probably encountered those amazon ads that just take over an entire site as if to say "Never ever return to this website again!"
"Congratulations! You've won [insert crap you're not actually going to win]! " and it's question after question after question of 'market research' basically just extracting as much personal information about you as possible .
The back button never gets rid of them so the only thing you can do is either play along or just close the entire browser page(es) and returning to the original site is fruitless as it's baked into the site page.. Dammit! I hate those suckers! They always seem to happen on sites I'm actually interested in reading. Well, goddammit! I lost interest so STOP IT you dumb bastards.. I'm not interested in not winning a god damn thing!

Well, that's off my chest.  I hope you won some crap you're never going to win.. 

[treee]

Amazon doesn't have pop ups like those. You've probably got spyware.

[Millhouse]

Few things to help you out:

1. stop visiting 'free' granny porn sites
2. learn to use AD blockers in whichever browser you use. AdBlock plus is one for example. A lot of sites don't like them and will force you to allow their page to run, but overall they are good to have imo.
3. Download and run CCleaner.
4. Download and run Malware Bytes.

https://adblockplus.org/
https://www.ccleaner.com/
https://www.malwarebytes.com/