Here are some reviews of the Fifth Edition. I'll post Sixth Edition reviews as soon as I have some.
Both HTML and XML books have been quite favorably reviewed by J. David Eisenberg on the Books page of the Web Standards Project Web site. Nice!
Jeffrey Zeldman, Web designer extraordinaire, and editor of the essential A List Apart says he needs this book!
My HTML book is also recommend by the Black Women's Network.
I'm happy to report that Barnes and Noble, Web Teacher, and John Kenneth Fisher, one of my betatesters, have all recently reviewed the new Fifth Edition of my HTML VQS. Very nice!
For hundreds of reader reviews, check out Amazon.