I'm now exactly in the middle of porting all my old use.perl blog entries to Blogger. Since I'm posting many entries (hundreds) in a row from a script, the Blogger spam bots marked this as a potential spam operation and don't let me proceed. I get a return string that I should log into Blogger and post a normal post (like this one), solving a CAPTCHA - but this doesn't help, as my script still gets blocked.
Needless to say this is very annoying. I created a support request for the Blogger staff. Hope they get on it soon.