Isn't a blog date-stamped?

The whole registered posting thing all seemed a bit ancient and out of date with the speed of change and life as we know it right now. Blogs clearly show time and date of posting, and frankly any computerised written content is pretty much date-stamped at point of creation. Word docs included. Wonder if the legal system has caught up and recognises the legality of web posting. Obviously the fact that I still did the old-skool thing shows my view on that one. I suppose there'll have to be some landmark case some day in the future to set precedence before the law moves on in any way!! You never know though...