Apparently there's a new Google tagcoming out soon

[Blazingpie]

And with every one we use, doesn't it make the sites using SEO look more and more obvious?

According to http://www.highrankings.com/advisor/getting-into-google/, Google is bringing out a new tag called “unavailable_after”, to be used when you want to indicate when a page mustn't be indexed anymore. The example given for the use is when you publish an article for free for a certain amount of time. Another one I can think of is seasonal specials (eg a summer specials page, etc).

[Blazingpie]

searchengineland has more info on it: http://searchengineland.com/070717-111517.php

Seems taht Google is also bring out a tag for non-HTML documents that naturally cant use metadata, such as pdfs and audio files

[Koz]

seems taht Google is also bring out a tag for non-HTML documents
thats excellent. its about time too. Google will naturally want to index pdf and doc files in its quest to bring users a variety of info. my experience so far is that pdfs that currently show up in searches are often not relevant, hopefully this will improve that.

[Koz]

oops just read the article: "Google has also added support to control access to non-HTML documents that can't have meta tags in them for blocking"

that sucks, i'd like to see a tag that can optimise a non-html file