Ubuntu blog OMG! UBUNTU! has a nice review of BloGTK with some great constructive criticism.
For example, they note that the buttons on the editor toolbar can be difficult to understand. 2.0.1 will feature tooltips for all the buttons to make them easier to figure out. Plus, the insert link icon will be the system standard icon.
The review also notes two feature requests: WYSIWYG editing and Blogger tags. WYSIWYG editing is being experimented with for 2.1, and Blogger tags will come once Ubuntu updates the python-gdata library to support them. Hopefully both will be coming soon.
Thanks to OMG! UBUNTU! for the nice review.