tedster - 7:28 pm on May 3, 2013 (gmt 0)
In what way such an issue can attract spammers? I mean how can they actually get benefit from it?
It's not clear that they can, for real. However, with the release of the Google Webmaster video a few years ago - focusing on the value of credible outbound links - it became "a thing" for spammers to experiment with. Once it's in their formula, it's slow to leave because spamming is often a mass-volume, churn and burn business.