Developmental Version and Firefox 4 Rated 5 out of 5 stars

Is the Developmental Version of this add-on presented above compatible with Firefox 4?
Or is this still being investigated?
I too hope Favicon Picker can be made to work with Firefox 4. I haven't upgraded yet, as I'm awaiting this compatibility enhancement,

This review is for a previous version of the add-on (0.6.1.14).