> * There are a handful of typos scattered through the text, about 5-10 errors
Should be fixed now!
> Can you give an example on this?
An anonymous user is not authenticated but may still access some data.
> * Server-Side Distributed Applications, I don't have a solid conviction but I can't really see how multiple systems with multiple parallell accounts is a common, viable or even realistic situation...
This is actually not that unusual. Mostly happens when a company buys or uses a third-party CRM / SaaS or whatever!