The "About" button just says it's a project intended to fix something. It gives some WHO and WHEN info, but it doesn't say HOW it will fix it or WHAT it does.
Instead it asks me to take a large step of trust by installing executable code into my browser.
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Have you read the page where you get the extension? http://tosdr.org/downloads.html : you can get the source code on http://github.com/tosdr