Do we will have a doctor soon at Google ?
http://inlogicalbearer.blogspot.com/2006/04/google-health-doctor-soon-on-your.html

MBD ??

This dates back as far as 2003 when it redirected to this domain:

http://services.google.com/marketing/stats/health

I assume it was some kind of marketing campaign – i.e. take an "advertising health check" or something of the sorts.

Nice so bad /pd
May be the recent entry of "disallow /mbd" in the robots.txt was not for "mobile device business" but is there for "medical business? database"

The redirection : I noted that one week ago :
http://blogoscoped.com/forum/25130.html