Looks like a nice collection of interesting links, nickie!
I would recommend to add a section called 'FM Loaders' - just for ease of use,
although I see that this is included in Thief Fan Missions FAQ already.
Speaking of loaders:
the section in the FAQ about GarrettLoader is pretty much outdated.
Most links regarding GL are dead (full install version, howto demos, ...), so no one will be able to download GL.
See Garrettloader stable release which has a link to the full install v1.41 which is a prerequisite for the 1.42 beta update.
Also I think the references to Dark Metal (abandoned) and Dark Mod (which has it's own build-in-loader) are nowadays rather irritating and should be removed.
Sorry to post this here, but since you are referring to the FAQ (which is CLOSED), I thought I should point this out here