PunkSpider – A Google for every web weakness

From what I have been able to determine.. the "Searching... " and blocking of the browser (tab) is because that site does not exist in punkSPIDER's index. Eventually the site stops blocking the browser and "No results found!" is displayed.

From the article the only use case of punkSPIDER mentioned explicitly is where a consumer could use the site to determine how many "known" vulnerabilities exist at that site before they go entering sensitive information.