Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.
Comments are awful. Shut Up hides them by default, sparing your sanity and preventing you from getting sucked into a world of hurt.
A web comic about comments on CNN's website, courtesy of Chainsawsuit “Comments Section”, a Chainsawsuit comic by Kris Straub For the sites where discussions can be more constructive — like GitHub, Reddit, or Stack Overflow — you can show comments by default. HOW'S IT WORK? Shut Up is an app you can install on an iPhone or iPad, and a browser extension you can install in Chrome or Safari. At its core is a stylesheet by Steven Frank called shutup.css. The extension injects the stylesheet's rules into almost all of the pages you visit.
tamperchrome - edit the requests that a browser makes. Super nerdy.
Viewimage fixes google search.
Various privacy-related hacks are also advisable. see noiszy page.