Google Reader Plus
The Download Now link will redirect to the extension page. To install the extension directly, click on the install button on the page.
Publisher's Description
From Ludovic.valente:
Google Reader Plus enhance fixing missing images in enclosures, better unread counter, better viewing on wider screens, fullscreen, preview, colored list view, filtering, multi columns display, jump top bottom, close entry, fit height, open in background tab, read by mouse, share news on Facebook, Twitter, Instapaper, mark as read,and simple advertising remover.