We have seen a plethora of discussions over the months and years that debate whether or not it is in a webmaster’s best interests to pursue no-follow links. From a broad perspective, no-follow links are specifically coded to tell search engines not to follow or judge your website based on the content of these sites.
Various changes in recent years in regards to how people communicate and interact with one another has shifted this dynamic, with some no-follow links not being true to their name and instead providing positive or negative “karma” to a site.