Is there a NeoGAF user highlighter for Greasemonkey that works? The one on userscripts is outdated and doesn't work anymore.
Use Scriptish instead of Greasemonkey. Not sure if it'll fix your issue but I notice Scriptish worked with some scripts that Greasemonkey didn't.
Ah yeah it's probably that.Remember you have to edit the script and add your username to the code.