I've gotten a number of reports of RapidBlog plugin now working today and I'm working on it.  It seems the blogger folks have changed the data feed and that is what is causing the problem.

I should get a fix out in the next 12 hours.

[Update -- I have a new build that should help -- Testing is not huge but I think it will fix the problem

http://loghound.com/download/RapidBlog_1.94.dmg ]

-John