virtual pages is it a best practice?

Hi EPUB 3 folks,
 
We have brought up the practice of including virtual pages before. The go to
page function in titles that have a print equivalent  is fabulous, but what
if there is no print version?
 
A quick check of character of documents I have handy shows that there is
approximately 2k of characters on a page. I would think that a best practice
of placing a page break indicator between block items closest to that 2k
count would work well. Of course, this cannot be a requirement, but I wonder
about publishing it as a best practice. IMO it would help in figuring out
how large a title is.
 
Thoughts welcome.
 
Happy GAAD
George
 
George Kerscher Ph.D.
-In our Information Age, access to information is a fundamental human right.
Chief Innovations Officer, DAISY Consortium
http://www.daisy.org
Senior Advisor, Global Literacy, Benetech
http://www.benetech.org
President, International Digital Publishing Forum (IDPF) 
http://www.idpf.org
Member of the National Museum and Library Services  Board (IMLS)
http://www.imls.gov
Chair Steering Council Web Accessibility Initiative (WAI), a division of the
W3C 
http://www.w3c.org/wai 
Phone: +1 406/549-4687
Cell:+1 406/544-2466 
Email: kerscher@montana.com