I’ve been playing around with Gnome Blog Entry poster and
BloGTK. They are both good, BloGTK has more features and some nice options for tagging.
To learn about these applications all I did was use the package manager that comes with Edubuntu and the word blog as a keyword for searching through the packages, click a little box, hit apply and 2 minutes later I have 2 new powerful tools for blogging. Gnu/Linux is incredible.