newsrdr.us checker by Firefox user 10361694

newsrdr is a Web based RSS and Atom news reader in the style of the former Google Reader. Its purpose: to bring you updates to your favorite sites quickly. This extension allows you to see the number of unread posts without having to keep newsrdr open. Simply click on the icon in the toolbar to go directly to newsrdr to read your posts.

Source code: https://github.com/tmiw/newsrdr-checker