Sure it blocks the news-feed on FB... but it also breaks the browsers ability to save your place on any given page you happen to visit and scrolled on, and reverts you to the top of the page if you click on a link, say in marketplace... you go to view the listing and you click back, your prior place is lost and you have to scroll all the way back to where you were... not how the browser is supposed to function.

Hope the author can fix this, because it happens off site (non- facebook sites) as well when the extension is enabled; disabling the extension reverts the browser back to normal function...