In the beginning [*] there was the HTML meta element and we used to write things like: <meta name="DC.Creator"content="Andy Powell"> <meta name="DC.Subject" content="something, something else, something else again"> <meta name="DC.Date.Available" scheme="W3CDTF" content="2009-10-19"> <meta name="DC.Rights" content="Open Database License (ODbL) v1.0"> Then...