Search quality engineers from Yahoo will be crying today. Look at this awful and successful spam attack on them for the keyphrase [personal injury solicitor]. Ouch.
If it's not clear from the screen shot - the first page of results is dominated by domains in the format of
personal-injury-solicitor-[location].co.uk. In turn these domains get their backlinks from a network of link pages.
I've not seen anything so crude be so successful in a long, long, time...