Msg#: 4316211 posted 5:17 pm on May 24, 2011 (gmt 0)
It's not really a mater of "good" or "bad", I look at it more as "right tool for the job." If you're outputting HTML, use an HTML doctype. If your document requires features of XHTML - extending the DDT, etc. - use XHTML. So the answer for most of us is likely yes, an HTML doctype is fine.
Msg#: 4316211 posted 8:46 pm on May 24, 2011 (gmt 0)
My interest was in reaching mobile viewers. The Wikipedia article on XHTML gives the impression that HTML 5 is now the interoperability horse that W3C is betting on. This supports g1smd's comment.
The article also reports that "Simon Pieters researched the XML-compliance of mobile browsers and concluded 'the claim that XHTML would be needed for mobile devices is simply a myth'". I will keep my eye on HTML 5.