Download it, then drag the file to your Chrome Extensions if that's what you're using
Also, it might conflict with RFI, to prevent that just disable RS forum enhancer, go to RFI options and check everything is okay, save options, and you can re-enable RS forum enhancer
lol... i had someone I barely knew on my homeworld change to the RSN "Mrs SSonic" just to cause drama... so I don't knowwww..
Probably not going as fast as the name suggests.