Google backend dangerous

[Julian Satchell <j satchell eris qinetiq com>]

I know the Google backend is not built by default, but I think it should
be removed completely.

It specifically violates their terms of use, and they are VERY
aggressive about sending their legal teams in if they think the search
engine is being accessed by anything other than a browser with real eyes
looking at the ads. I've been there, and I would hate for anybody else
to feel their wrath.

If you want to do this sort of thing, the legal way is to get a token to
use the SOAP webservice interface to Google, and use that. It is only
for personal, research use, and commercial use is forbidden (so I can't
use it for example).

Julian