Yesterday’s Guardian Technology supplement had an interesting article on comment spam and the use of the “nofollow” feature to discourage it. My own view on this is that the value of “nofollow” is limited nowadays because of better spam filtering; Akismet takes care of the vast majority of mine, to the extent that I only have to actually moderate a handful of spams a week (there is also Mollom and MT Antispam), and I moderate comments from anyone who has never posted before. As for genuine comments from people who just want me to advertise their website, and are commercial organisations and don’t want to pay for the ad, I generally refuse them. I have no need to suppress the search engine rankings of blogs run by genuine commenters.
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SubhanAllah, I just read about nofollow today and here I am. :) Isn’t nofollow activated by default? Have you disabled it?
Actually, I didn’t realise it was on as standard, that there is no option to change it and the plugins that are meant to switch it off don’t work with my version of WP. I’ve filed a bug report as I’ve found quite a few plugins which have no effect with WP 2.7.