Intended audience

Researchers? We are all researchers, so we know best how to write to ourselves as an audience. But that might limit interest in the book.

Practitioners? That means programmers and a broader audience than researchers. If we are aiming for practitioners, should we cut user study information from our chapters?

End users? Terminology problem: no one wants to self-identify as an end user. End users would also want to download and use a system immediately, but not all chapters describe available systems.

Suggestion for publisher: web community in parallel with book. Publishers get excited about this. Many of the chapters are community-oriented anyway.