Drivers
Due to the difference of features in the existing blogging APIs, there are
two driver classes: Services_Blogging_Driver and
Services_Blogging_ExtendetDriver (which extends the
first).
Drivers extending Services_Blogging_Driver do only
support creating, saving and deleting posts. They are not able to list
(or modify) existing posts.
Drivers extending from Services_Blogging_ExtendetDriver
do have more features: Reading existing posts, get a list of recent posts,
and getting a list of the titles of the recent posts.