Is RDF a More Extensible XML? I’m not convinced at all, watching this discussion evolve promises to be interesting. Dare writes:

The more I look at how RDF people bag on XML the more it seems that they don’t really write applications in today’s world. Almost every situation I’ve seen someone claim that RDF technologies will in the future be able to solve a problem XML cannot, the problem is actually not only solveable with XML technologies but actually is being solved using XML technologies today.  

I can’t claim to have looked into RDF in much detail, but my feeling is more that every time someone claims RDF can solve a problem that XML can’t, it can actually be solved by neither.