As I tend to visit all sorts of websites within my line of work and even when I'm just browsing the web, I always end up with an annoying popup form time to time that slips through Chrome's popup blocker.
The fact is, these popups are created by on-click events which Chrome's popup blocker doesn't intercept as they are considered user-triggered. But in reality, this is not always true and people end up with annoying popup windows they don't want to see.
For that reason, I have just published a new extension, JavaScript Popup Blocker. It blocks all JavaScript popups but it is also flexible to let you specify the pages that are allowed to open a popup window.
You can use the link JavaScript Popup Blocker to check out the extension. You can also see it listed on my extensions page.