There has long been a debate on the internet about SEO in relation to using either sub-domains or sub-directories for blogs.

I am not terribly interested in that debate. I merely want to redirect my blogger blog to my domain, the easiest way possible, and in a manner least likely to impair the current functionality of my server/websites. I believe that the simplest way in which to do this is to use a subdirectory for the blog (although I am slightly concerned that the CNAME record will be shared by both)

My question is this: how to use custom domain sub-directories when blogger refuse their use; complaining that the "URL must not end with a path" when a user attempts to establish such a custom domain?

Google searches on this matter are oddly useless, as most results return Blogger's forum entries that always seem to direct to Blogger's Help home page o.O (using the search facilities of Blogger's Help directory itself fails to unearth these forum posts).

Any pointers (no pun intended) would be greatly appreciated.