html/xml doc type question?

M

mal. D

New member
why is are these doc types from these sites different

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml" xmlns:v="http://rdf.data-vocabulary.org/#">

Why does cnet use this doc type as transitional xhtml

Why does nine msn use this doctype as html transitional

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!--Server:WEB9MSN26-->

HTML TRANSITIONAL

I mean these are big websites wouldn't you think it should be set to strict, and moved to xhtml rather then html. so confusing only facebook uses uses todays standards

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

strict doctype under xhtml. why not just move to one, strict, i know xml does not use ie browser very dumb maybe they will who knows, but i am doing research on the future path of web developement for what will be in next 5 to 10 years.

Why are they choosing html transitional, html, strict, xhtml transitional, xhtml strict, what would you use
 
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