It's got some amazingly cool features like being able to index, search and display generic meta tags. Here is an example of a search for the meta tag foo equalling bar. See the explanation of the meta tag searching feature by the developer of Gigablast, Matt Wells.
Gigablast is a real alternative to google. Unfortunately, my cynicism does lend me to believe that all engines have a period of viability, which indeed innevitably leads to decline and the loss of prosperous results. Google is in its decline, while Gigablast is on the ascent, reaching forth to grasp its summit.
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Very very fast, all you seekers out there get ready to start your engines.