[uf-dev] XBRL, XHTML, Microformats and context-aware computing

[Michael MD]

> 
>> What microformat use cases call for strict XHTML validity?
> 
> Microformats work with XHTML, (among other XML dialects), HTML4 and
> HTML4.01. Validity isn't required for Microformats... they work in
> syntactically invalid documents... but that doesn't mean that invalid
> documents are acceptable.

from a practical perspective: 
   not all parsers handle invalid documents very well.