You are receiving this message because your email address is associated with an unmigrated legacy Blogger account. As we announced in April of last year, legacy accounts will no longer be accessible after May 30th, 2012 unless they are updated to the Google Account system. Any blog content associated with this account will also be unmodifiable after that date.
To transfer your blog to the Google Account system you need to visit the Legacy Migration page at http://www.google.com/appserve/mkt/2iCtjeN2zsjQLb right now to make sure that your account and associated blogs are claimed. If you’ve forgotten the Blogger password that is associated with this email address, you can use our Account Recovery page at http://++++++++++++++++++++++++++++++ to request password information to be sent via email.
For more information, please see our initial announcement we posted to our blog at ++++++++++++++++ . If you have questions, please visit our Help Forum at http://+++++++++++++++++++++ create a message with [Legacy Account] in the subject line.
The Blogger Team