Many bloggers wants surfers to be able to apply for permission to view private blogs. Previously this was possible by typing a message (for example email address) into the private blog title. Blogger changed that. Private blogs no longer display blog titles, only the URL of the private blog. Now the only way to get a message to surfers on how to apply for permission to view private blogs is to add that message into the blog URL. Look at the screen shot below for example:
In the example above, the blog title is firstname.lastname@example.org
An alert surfers should be able to guess that he or she need to write to email@example.com to request permission to view blog. As for the blog title, you can set it to whatever you may wish. It is not the ideal solution, but the only available option at the moment unless Blogger changes how private blogs are displayed again.