In the past year or so, the term "HTML5" has increasingly been picked up by the tech press as the successor to "DHTML", "Web 2.0" or "Ajax". When used by the tech press, it is becoming a generic term for "the next generation of web technology", except that the term "HTML5" is less precise than even that. Consider the first paragraph of an article about HTML published this week: HTML5 is the hot to