http://bugs.dwscoalition.org/show_bug.cgi?id=2297 and http://bugs.dwscoalition.org/show_bug.cgi?id=2296 may be relevant - I don't think we have import or export for those services right now, and it's one of the things that we want to add.

Edit: I knew I'd read about it somewhere recently - the project is described on the wiki, and says that we want to add import and crossposting functionality for Wordpress.