By default, whenever anyone comments on your blog WordPress will add rel=”nofollow” in the link. I didn’t realize this was something that WordPress actually did… but I was curious why anyone would utilize it.
Google actually utilizes rel=”nofollow” to simply ignore a link when calculating a website’s Pagerank. The theory behind automatically adding this information in blogging content engines was that it would dissuade comment spammers from clogging up blogs. The problem is that comment spammers really don’t care about their site’s Pagerank… they simply care about getting the link out there for people to click-through on.
Additional information on nofollow:
- WordPress on nofollow
- Wikipedia on nofollow
- Dofollow Plugin for WordPress. UPDATE: this plugin was actually breaking some of my comments so I removed it. Read my post about hacking the WordPress source code to remove nofollow from the source.
- Nofollow Plugin for WordPress. This plugin allows you to even nofollow your own links within the content you’re writing. We utilize this on Martech Zone.