I wrote WordPress Multisite Administration for Packt. http://www.packtpub.com/wordpress-multisite-administration/b...

It was an overall pleasant experience, but I do agree they care more about quantity than quality. Their entire editing process was really sloppy. And review process is crap, at best.

I'm writing my next book through Leanpub.com, that way I will actually make money and can have waaay more control over the final product.