All comments get a ‘dofollow’ link.
I’ve implemented ‘dofollow’ as a bit of a reward system for people who leave a comment here and have a website — if you you’re kind enough to leave a comment, you’ll get a real live link back to the site you leave in the URL field.
To accomplish this, I’ve used the WordPress Do Follow plugin, which basically removes the ‘no follow’ attribute that Google and other search engines use to determine what to index and what not to index (funny enough, I’ve noticed that Google seems to index links marked even with ‘nofollow’ however).
For more on the controversy of whether to follow or not to follow, I’d suggest starting with the plugin maker’s own argument as to why the whole ‘rel=nofollow’ thing isn’t going to work.
So anyway, to make a long story short, leave a comment here with a URL, and you’ll get a nice link back to your own site. Just my way of saying thanks for your comment.

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