Who's using GlassFish in production? What are their experiences?

A good way to see what others are doing and learn from it is to read the GlassFish
Stories blog, which describes real-world production experiences from all over the world.

The blog is also a good way to share your production experiences with
the rest of the GlassFish community. Participation is as simple as [sending an e-mail] indicating
your interest and then replying to a set of questions.

NOTE: The GlassFish live map is also interesting. It shows GlassFish downloads and usage over time.