What is pop-under exchanges?

[alsp123]

What is the meaning of pop-under exchanges???

I think Pop-under exchanges give us a small fragment of code to insert into a web page.When any visitor visits your site, a window pops up underneath the browser with a member's website loaded in it.
I want to get more knowledge...

[sabrinasai]

Very interesting question check out this link

[jesicawillss]

Hello Sabrinasai. I think you forgot to put a link. Anybody know about this then share your knowledge.