Needed this add-on to keep a page awake and avoid a very long login procedure.
Does the job well. Lightweight, open source and no fancy gimmick.
And most importantly, the add-on doesn't ask for useless permission to read your browser activity or data of all your websites.
For this, it's well deserved 5 stars.

This Firefox warning kind a made me uncomfortable and I end up removing it. Would reinstall if this is taken care of.

"This is not monitored for security through Mozilla's Recommended Extensions program. Make sure you trust it before installing. "

Looks good but the timer works only with minutes (seconds will be more useful)

My problem is LinkedIn. I want a tab for a group that I follow, refreshed periodically so that I can see new posts. However, the plug-in often updates when I'm in the middle of typing a response, erasing my work. The extension won't work for me unless it only auto refreshes if the tab is in the background so that when I click the tab, content is always current, but if I'm actively using the page, it doesn't refresh and destroy my work. Even better would be detecting that I'm typing on the page and pausing refresh for a few minutes while I'm doing that.

have to write a review before i using it , but it looks good

I really liked, works pretty well.