If I domain map a new domain name to a sub/directory (not

Hi:

If I domain map a new domain name to a sub/directory (not a subdomain)...i.e. mysite.com/sub-directory (new home of a proposed fresh domain). After it is active, will the traffic and seo benefit still be will the primary domain name where the sub-directory lives & also allow for the new domain that is mapped benefit as well?

Thanks a lot...the more insight you have the better on this so we can structure it...

I am aware most like using sub-domains so it separate and looks nice if someone does not buy their own domain etc.

If you have, also, time to compare and contract using the sub-domain and sub-directory in addition to the above questions that would be great too (but is optional depending on your time available)...smile.

Anyone is welcome to comment for my benefit and others in the future...

Greg