Well ...
the last three characters, "umo",
are my initials:
(U)lrich (M)ueller-(O)ltersdorf.
And "OB" is the german abbreviation
of "Ober-Bürgermeister",
the german word for "Lord Mayor".
A couple of years ago, in 2003,
I took part in an election for "OB",
as an independent outsider.
And
www.obumo.de
was my web address, then.