If you’ve managed to get access to the newest version of the Twitter web site, also known as #NewNewTwitter, you might have noticed that the content is now on the right-hand side, which just feels unnatural. Here’s how to fix it in Chrome or Firefox.
It’s pretty simple—all you need to do is install a quick user script. Chrome users can simply click the link, but Firefox users will need to install the Greasemonkey extension first. Internet Explorer users… well, you’re out of luck.
Disclaimer: This is a simple script and shouldn’t break your browser, but if it does, it’s not my fault. If you want to uninstall the user script, you’ll want to open up Tools –> Extensions and you can disable it from there. Note: user scripts break all the time when the original site is updated. This one is pretty simple, but if you are reading this next year, it probably won’t work.
Install the Fix Twitter: Move Content Pane Left user script (view source)