Is there some way of tracking how widely used a particular Gadget is? I.e. how many users have enabled it (or disabled it if on by default)?
Topic on Extension talk:Gadgets
You can track usage of non-default enabled gadget in Special:GadgetUsage.
Doh! How did I miss that one. Many thanks.
for completeness: unfortunately, currently there's no way to view how many users disabled a default gadget. there's an open ticket to add this stat to gadget usage: phab:T121516.
peace