very useful addon Rated 4 out of 5 stars

A configuration item might be useful:
ReloadEvery hooks itself into the "Reload" button, and adds a pulldown. There are cases when this is not desirable, for example in combination with the Stop-or-Reload addon: on every page load (not only reloads by ReloadEvery) will the icon narrow. When load has been completed, the now wider "Reload" icon is displayed again, resulting in a very nervous toolbar by wiggling all buttons right of the "Reload" button.
An option to disable adding the pull down to the Reload toolbar button may be of help here.

This review is for a previous version of the add-on (2.0).