Conferences about meetings and collaboration in United States

[christoph (Christoph Haug)]

There are probably many more, but did you see the ones mentioned in this topic:

What's your favourite conference about meetings?

As I explore the rising industry of meeting design and event management, I realize that there seem to be quite a number of related conferences and trade fairs, but it’s not easy for an outsider to get an overview of which ones exist, how big they are, what their main focus of philosophy is etc Does anyone know a bit more about this? Which meeting related conferences have you been to and what was it like?