graeme_p - 8:48 am on Jul 27, 2012 (gmt 0)

The problem with Google advice is that you can do it for new links, but, if I understand it correctly, for an existing link you need redirect all requests for the original URL through a robots.txt blocked URL, so you lose the benefit of all links to that URL.

@buddhu, ues it is a real adverb [chambersharrap.co.uk ] :)