intertwingly

Zeyad Rajabi: At a minimum, our goal will be to always validate as XHTML 1.0 Transitional compliant code. For a basic blog we will validate as XHTML 1.0 Strict compliant code. For those blogs that use features where we cannot output Word supported CSS, our aim is to be XHTML 1.0 transitional compliant.

It certainly looks like there will be a lot more use of the style attribute in feeds in the future.  The new WikiPedia feeds depend heavily on the use of style to convey exactly what changed.

Aggregators that blindly allow style attributes through may be creating a security risk.  Those that blindly strip style attributes won’t allow their users to take full advantage of those WikiPedia feeds.  Those that attempt to parse the style attributes will find that the full grammar is quite extensive.

As the Feed Validator is now increasingly looking inside of content for feed related issues, it is becoming more important that the issue found be more precisely identified.  Where it previously would simply point to the end of a description and say “there’s a relative URI reference in here”, it now will tell you exactly what URI appears to be incomplete.

Here are some examples from popular feeds: MobileCrunch, Ray Ozzie, O’Reilly Radar, Think Secret.