This is a linkpost for https://www.threemonkeymind.com/l2g/
I independently generated an alternative solution using the redirector extension:
http://einaregilsson.com/writing-a-browser-extension-for-three-browsers/
Pattern:
Example URL: http://lesswrong.com/some_path
Include pattern: *lesswrong*
Redirect to: $1greaterwrong$2
You should get out example result:
http://greaterwrong.com/some_path
(I am using Firefox and I assume it is the same on other browsers)
Lesser2Greater is a Chrome extension that redirects from lesswrong.com to greaterwrong.com. I’d like to use it, but I’m not a Chrome user. I do, however, use bookmarklets, so I made one to replicate Lesser2Greater’s functionality.