Does not work. At all.
Shows small rectangle in the right top corner with an x in a red circle.
Location selection fails.

👍 Essential,neat and pleasant.

cool

Doesn't work. The circle rotates endlessly.

It's very beautiful,but I feel very uncomefortable about those red points around the icon.

Works out of the box, doesn't need location services (likely checks via IP). Looks good too. A bit tricky to figure out to set the default location, but trust me you'll figure it out.

Initially it recognised my location. Two days after it was reporting me the weather from a place 600 km. away!!! I tried to change location on the menu but it does nothing. Sorry man, but this is a failed add-on.

Limited, but at least it updates frequently without my having to refresh it manually. Worked fine for me on both Chrome and FF. I can save where my kids live and compare weather easily. Limited forecasting but you are not being dragged to websites that use a lot of resources for more info. Chances are you have a favorite bookmarked already for radar, etc. Self-contained in browser; no out-links (that I have noticed). Doesn't try to ultimately try to get you to sign up with some site or other. Can't explain why it didn't work for some; as of this comment I run Win 7 both 32 and 64 bit.

It just doesn't work. Tapping on it in the menu does nothing.

Doesn't even recognize Prescott, AZ

It displays its data quickly, but it doesn't find the city where I live (small European city). I can have a bigger city, but I prefer the weather app with my own city displayed, It's more accurate.

The good: All free and doesn't have an over priced "pro" version to unlock basic features.
The bad: Could be a bit more intuitive, for example differentiating between "default" and "favourite".
Overall: Well worth a try.