iReader
Just read about iReader on Techcrunch and first i thought it would work similar to snap.com’s website picture preview. Eager to get it working i hit the download and it is in fact a firefox plugin.
Check it out for yourself. It is quite nice.
It summarizes the content of the page linked to. Sometimes it doesn’t seem to work or at least not right away though.
Update: What is quite annoying is that you cannot move the popup bubble and there is no close button. Sometimes it pops up out of nowhere and keeps you from clicking the link you just wanted. Often reloading a page is the only solution. They urgently need to fix that