Disclosure: I am a TypePad affiliate.
If you have a blog on Blogger and are FTPing to your own web host, your days are numbered.
Blogger announced that it will end its FTP support soon.
Blogger states that they introduced custom domain support 3 years ago.
This is similar to the domain mapping that TypePad does for its users. This would give users the same Blogger features without the need for web hosting.
Read more about the news here, Important Note to FTP Users.