Go is a web application server framework. It combines concepts found in the Zope and WO frameworks.
Its unlikely that you want to give it a try, unless you:
- a) like the WO component/templating system
 - b) don't want to use WO for whatever reason (otherwise just use WO)
 - c) are not interested in 100% exact WO compatibility
 - d) find Java as a programming language tolerable
 - e) do not expect a shrinkwrapped product
 
If all that is OK with you, Go, give it a try ;-)