Well in fact I'm in favor of this tecnology. First of all I think that is the time to get life easier to computers. Second, the programmers are bored to build the same "stupid" search functions! On other hand web pages don't talk the same language when you think on information, in this way I like the idea of represent data and consequently information in structured way so that can be interpreted and/or analysed!
So I vote yes to this new web data philosophy!
;)