Those that "aren't monitored by Mozilla so be careful" (pretty much all of them) which obviously means one should build it from the published sources oneself rather than downloading a pre-built package.
All the popular ones are all Mozilla monitored, so I don’t agree that pretty much all of them aren’t.
Personally I don’t touch unmonitored addons anyway. There have been incidents of developers selling their Addon to some dodgy buyers who then started abusing it.
