Planète Web Sémantique
One of the more innovative uses of Venus is Planète Web Sémantique. This web site focuses on French language posts on the topic of the Semantic Web. By default, posts that are not in French and are off-topic are hidden via JavaScript, but this can overridden.
What makes this innovative isn’t the JavaScript, but how the metadata is gathered. This is best illustrated by a doing a view-source on the generated Atom feed. Entries are annotated with xml:lang attributes, and many sport a <category term="WebSemantique"/>.
The key is that this data does not depend on the original authors inserting it there. Instead, it is inserted via filters: guess-language and categories.xslt.