FranticFish - 6:06 am on Feb 8, 2013 (gmt 0)

Google have admitted unauthorised links to a website may harm it

Not quite: they've admitted that 'poor quality' links may do harm. [ADDED and this is a very tacit admission]

The legal precedent you'd need to set therefore would be proving in court that my link has a chance of harming your site; and in a criminal court then that standard is 'beyond reasonable doubt'.

If you wanted to bring such a case based on your fears of my harming your website, you might then have a case - based solely on the merits of my site.

But if you're asking for money to overlook the merits of my site, then I think you'd have a non-starter. You're so concerned that $5 would put your mind at rest? You'd be laughed out of court.