This folder contains all my favourite userscripts, including scripts written by me, scripts written by others, and scripts I have modified.
If you want to browse or install these scripts quickly, you can try browsing the "official" release page: http://neuralyte.org/~joey/gm_scripts/joeys_userscripts_and_bookmarklets_overview.html
That page also lets you load the scripts as bookmarklets instead of userscripts. (I guess on modern secure websites, only the Static Bookmarklets will load properly.)
Finally, this is where they are kept on Github. You can provide feedback or pull requests here.