As many of you know, I'm right in the middle of writing a new book on concurrency. I'm curious what people would like to see covered and in what proportions.

If you had $100 to spend as you see fit across any number of the following concurrency topics, how would you distribute it?

(0) Parallel algorithms (Comp Sci., technology agnostic)
(1) Architecting large scale concurrent programs
(2) Windows concurrency internals
(3) CLR concurrency internals
(4) Windows (Win32) concurrency API best practices
(5) CLR concurrency API best practices
(6) Client-side concurrency
(7) Server-side concurrency
(8) Reusable concurrency primitives (building and using them)
(9) Performance and scalability
(A) Debugging

I know there's some overlap and that each isn't entirely orthogonal, but that's okay. If there's something missing, feel free to add it to your response and allocate some funds for it.

I'm looking forward to seeing what y'all think!