What do you like best?
Weather Underground (Wunderground/Wunderweather) has been my favorite way to get weather updates, warnings, forecasts, etc. for years. Its interface is easy to use, collaborative, aesthetic and includes things like moon cycles, how many hours of sun per day, and you can easily go from one weather station to another.
What do you dislike?
One of my only quips with Weather Underground (Wunderweather) is its radar detection. If you go to the screen with radar, either online or on the mobile app, it seems to always buffer and doesn't go that far into the future. The main reason I usually want to see radar (living in SW Colorado) is to see storms coming through, or what type of precip will happen, which the weather forecast will offer, but the radar won't show that well.
Recommendations to others considering the product
I love wunderweather and use it both personally and professionally. I will say I like its interface and ease of use, but if you're going SOLELY on correct weather patterns, I would use a different service, like NOAA.
What business problems are you solving with the product? What benefits have you realized?
For work, I travel a lot and depend on knowing what weather is coming through. Every morning I use wunder weather to see what the day/week's weather looks like and what I can prepare for. I started out as a personal user of WW, but have continued to use it in a professional capacity.