Last year, Google enhanced the snippets for discussion boards and scientific papers, while extracting the published date from many web pages. Google is able to recognize the structure of a forum thread, find the number of posts and the date of the last post, detect the author of a scientific paper and extract the ratings from all kinds of web pages.
It's amazing to see how many useful details can be obtain from unstructured web pages without requiring a special markup.
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I think it is great! I hope they keep it.
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