When Is Link Worth More Than a Link?

I would hope that since the Google Penguin update came crashing down around everyone’s ears last year that site owners are being a little more careful about their link building choices. While I don’t want the fear of a penalty to halt your link building campaign in its tracks (which I’m sure has happened for plenty of sites), I do hope that site owners are becoming a little more discerning during their hunt for inbound links.