FYI for those of you who have very old Blogger accounts with static content -- the other day I was looking for help on a browser problem, and came across this official notice which I'm reposting verbatim:
"(This message only applies to a tiny fraction of users who haven’t logged in to Blogger since 2007. If you’ve logged in to Blogger at least one time since 2007, you won’t be affected and can disregard this message.)
There was a time early on in Blogger’s life where we had our own, custom account system for handling login authentication. Starting in 2006 all new Blogger accounts were created using the official Google accounts system, and then in 2007 we started the process of moving all of our legacy users over to the Google accounts system. Now, four years later, we’re finally at the home stretch of the transition. For a number of technical and operational reasons, we’ve decided to finally end our support for migrating legacy accounts and blogs after August 1st, 2011. So if you have a Blogger account and haven’t logged in since 2007, you will lose access to the account and associated content permanently unless you update to the Google Account system before August 1st.
Updating to the new account system is easy and should take just a few minutes. We really do value all of the content that has been created on Blogger and we hope that as many people as possible will reclaim their blogs. If you’ve been avoiding this task for a while, we encourage you to head over to the Legacy migration page and update your account.
We’ll be sending a similar notice later this week via email to all of the email addresses associated with the legacy accounts we have in our database. In a few weeks we’ll also make another announcement here on Buzz, with more specific updates on the transition.
If you have any other questions about this process, please let us know by posting your issue in the Login section of our Help Forum."
As of August 1st Blogger is also no longer going to support older browsers, which you can read about here.