If you are a FriendFeed user AND you like ProBlogger – you might want to check out a greasemonkey script for Firefox users that Duncan created that puts a ProBlogger tab to the top right hand corner of your FriendFeed page.
It means you can view ProBlogger from within FriendFeed – like this (click to enlarge):
He’s also made some others for other blogs and also Gmail and Google Reader (among others) which means you can use FriendFeed as a start page for lots of sites. Grab the ProBlogger Script here.