It's not a problem for the website owners as they are also earning from those annoying popup advertisements. They don't care if their visitors will click it or not as long as it is being shown to their website and gets some views. This is the most annoying and unwanted way of doing internet marketing, I hope this will be obsolete soon.
I agree popup need to go away. They annoy users, make websites look like trash and degrade the websites reputation. Most clicks on popup are accidents so people get directed away from the site to some spammy trash.
They are also almost always not profitable. The ROI on popups is so small.. usually less then 1000-1 That means if you are paying .25 a click you will spend $250 to get 1 legit sale.
I love my Firefox Adblock..
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
Popup is about to die soon, on the next Chrome update that has its own ad block