This wonderful Chrome extension has made my life quite easy, especially because I browse a lot of news sites. Hover on a link while pressing Alt and the link’s target page opens up in a popup. No more messing with the tabs. The popups are easily expandable and movable.
This comes especially handy when you’re in a news site and have to open new tabs for each news item you want to read.
Here’s a screenshot to give you an idea: