Just close the tab/window and move on.
I refuse to allow cookies. If websites need to be read, they can forgo the 'cookies' crap. It's not as if my life depends on some random website.
i would be concerned about what sort of exploits may be facilitated by we use cookies popups
Regulations have consequences ;)
seriously!! they are annoying.
"When will the 'we use cookies' popover end?"
As soon as you disable Javascript. They will not do this to you without the use of Javascript. Take away the Javascript, and the popover technique comes to an end.