Visualization of links between Wikipedia articles

I stumbled upon a rather amusing application, Wikiweb - shows semantic links between Wiki articles.

This is done in much the same way as in the addon to Firefox, which tracked banner ads.
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Available for now only for i-devices. It is worth the program 5 bucks.

According to the developers, they donate part of the funds from the sale of the application to the Wikimedia Foundation.

Project site
ITunes Page