I‘m another happy long time user. C4C is easier to use and less intrusive than everthing similar you get for Firefox or Chrome - perfect for short term surveillance of any texty website part.

I've used this add-on for many, many years. Great for checking stock on shopping deals, waiting for new forum posts, monitoring live market data, or alerting me to election-night data updates. I'm surprised how often I find it useful, tbh. And It's been consistently reliable for years and it's always worked well for me.

It's fine

Perfect for my purpose. Awesome job!

Works pretty well. Plays a sound and opens a tab when firefox auto-updates the addon though, which is really jarring. I don't expect a plugin to randomly start making noise when it's not in use.

Totally useless, should be remove from addons

No longer works, poor UI, paid interface.

Does not load page, severely limited options in the "FREE" version, save your time.

This extension worked way better in the past, i've came to use it again since a week with 10 tabs and i got a ton of false positive, and i just select one world like ( unavailable or a price tag ) always been a mac user, but it seems like something is wrong with these newer releases.

Says there are changes even when there aren't. Basically useless.