Force External Links to Open in a New Window

It seems to me that it has been convention to open up external links in a new window for a while now.

[Recent articles](http://uxmovement.com/navigation/why-external-links-should-open-in-new-tabs/) indicate that it is easier for a user to navigate around an external website and then return to the original website by deleting the tab.

Most of the articles stating *Never Ever Open Websites In New Windows* were written before tabs were popular.