Rated 3 out of 5 stars

Very useful addon, but, unfortunately, incompatible with sister addon Firefusk due unsupported DATA: URI scheme used in Firefusk
Bugreport sent to author

This review is for a previous version of the add-on (0.5.1). 

Firefusk

I can't get Firefusk 1.6 to work in Firefox 3 and so am unable to see why Save Images is incompatible.