Today is another unfortunate day for 2 blog editors: they can't go through our company firewall.
So they have to go, and I can't say anything much about them. Except that both seem to be easy to install. Bleezer works the same way as Flock when adding your blogs - only requiring your blog provider, your username (e-mail address), then your password. Qumana is like Scribefire in this regard - each and every blog you have, you need to register.
Other than that, there is nothing more that I can say, except sayonara. I've uninstalled them immediately, so I don't forget.