WIKI: contact info for contributors

[Osamu Aoki <osamu@debian.org>]

Hi,

Wiki's strength is low theashold for entry to contribute.  This comes
with price.  At this moment, for normal DD, it is not easy to trace
contributors and ask and discuss those contribution with them.

When I see somewhat broken contribution, I am not brave enough to revert
them.  They seems to have good idea.

I have been somewhat successful with google user name.   But we should
have some some interface to expose user's contact e-mail address.

Regards,

Osamu