Marketing_Guy - 12:28 pm on Jul 12, 2012 (gmt 0)

There's lots of complaining over at SER about this, but realistically it's a fad technique that the link building industry basically ruined by mass producing poor quality work.

As with forum posting, blog commenting, guest blogging and even the much reviled directories - those who do it right do well from the exercise, the rest just try to do it cheaply / quickly and end up forcing Google to adapt to the spam.