In my random wandering across the internet today, I discovered that, by default, WordPress adds the
rel="nofollow" attribute to links in comments. Now, we all know the original purpose of nofollow, to try and discourage comment spam. This isn’t really relevant to WordPress anymore, though. Akismet has been supported in WordPress for quite some time. Indeed, I noticed that 2.7 comes with it installed by default. I can attest to the quality of the Akismet plugin: out of thousands of spam comments, it has let exactly one through, and I’ve had one false positive.
To that end, I strongly recommend all WordPress users install Akismet, and the DoFollow plugin. All it does is disable the nofollow attribute on external links in the comments. With the help of Akismet, you can safely do this without providing assistance to spammers.
And to everyone who has contributed to my blog in the past, my apologies for giving you your proper due. That has now been remedied.