Just came across this today and have got to say that it looks pretty impressive. It does a lot of things farr does and a lot of things i wish farr did and being a mozilla product its browser integration is amazing.
I think once Mouser adds the new grid mode, hopefully with image and multiline support
, farr will be able to do this and a lot more. Its still in early beta stage but nevertheless i think there are a lot of things we could uh.. get ideas from
http://labs.mozilla....ntroducing-ubiquity/ 
