"Mouse movement" is disabled by default and listed under "Use with caution" because it can potentially cause breakage on some websites. StopTheMadness tries as much as possible to avoid causing any breakage. You may just want to keep "Mouse movement" disabled in the "Default options for all websites" and only enable it on certain sites such as
twitter.com. If you prefer, though, you can enable "Mouse movement" in the "Default options for all websites", and if you happen to run into incompatibilities, these are easily fixable by making exceptions in StopTheMadness. The choice is yours! StopTheMadness is designed to make the web work the way you want it to work.