useful
Found some pretty useful info that isn't easily discovered...
For e.g. - The sequence in which ASP.NET looks through the collection of the REQUEST object (query string, form, cookie, client cert, server vars).
Also - interesting take on limiting usage of session objects.
I liked the treatment on connection pooling and caching practices as well.
Overall - I would summarize it as 'contains useful info that may not be easily found elsewhere....'