Greasy Fork is available in English.
prevents new windows/tabs from opening via javascript
Some sites open ads in new windows/tabs (often they use tricks to make such windows hardly noticeable: make them very small, place them on the edge of the parent window etc.) - this simple script prevents that (it's not a silver bullet, but it works in most cases).
Note that the script makes no difference whether it's an ad in a new window or something useful like a login popup - it just prevents new windows/tabs from opening with javascript in general.
Thus, this script can be considered as an emergency tool in case you find a useful site that uses the methods described above(remember to disable it in the tampermonkey menu as soon as you are done visiting such a site, as it runs on all sites by default and is likely to break standard functionality).
