Very short, very easy guide to install Flock on Ubuntu
It's found here
Ive been using Flock now for almost two months Im a total Flockstar! I really enjoy its smooth interface, compatibility with Firefox extensions and integrated social browsing options. It has simple browser-blogging, double-click URL bookmarking to del.icio.us or Shadow. Also integrated Flickr & PhotoBucket accounts. Try it out. Join the Flock!