Most of the programming books suck. I mean they just rehash stuff that can be found in the documentation or MSDN. For example pick any book on ASP.NET. It’s the same stuff about the controls and how to use them. The web page life cycle… blah blah.
Why did you spend any time coauthoring a book which you don’t want people to buy? Wanted to see your name printed?
I stopped buying books long time ago. Now I just browse them at the bookstore and return them to the shelf (actually I leave them by the comfy couch 
). Yes I return them because they are not worth buying. Reminds me of music albums. An album might have one or two good songs and the rest is rubbish. Same with books. One or two good chapters… or a few good pages only!
I need good stimulating books. Books like the SQL puzzles by Joe Celko. Give me a puzzle and show me how different people solved it.
Effective C# was a good book. Tell me how NOT to do things.