As a long time Blogger user, I do worry a bit about how much longer Google will support this. The rise of Google+ drives that. The various features added lastly to + make it look like they compete, and we all know about “Houses Divided”.
It seems that “+” gets all the developer energy, all the press. Blogger is way behind Word Press as far as features. So, probably, I’ll do what so many others I know have done and port this over to WordPress.