Updated Wed Sep 28 01:52:22 PDT 2011. Oops, I forgot a notice for everyone. You may need to request your quota for Blogger JSON API via Google APIs Console. Please check your console.
I added Blogger API sample on github. The sample shows blog object, post ids and URL for this blog.https://github.com/comewalk/google-api-perl-client/blob/master/eg/blogger/cli_public_access.pl
You can try the sample like below.
# Edit Simple API Access Key instead <YOUR API KEY> $ vim eg/blogger/cli_public_access.pl $ perl -I lib eg/blogger/cli_public_access.pl
Also, I updated sample wiki page.