Wired has a series of How-To pages that run off of a Wiki-style system, allowing anyone to add or edit a page. And, unlike Wikipedia, they haven't included "nofollow" commands in their external links, meaning that any link placed in a page gets indexed as an incoming link for sites.
This may sound wonderful, but now that it has been figured out, it could turn these useful pages into a marketing spam haven for unscrupulous SEO marketers. Go into a how-to page, make a tiny edit, throw in a link. Create a whole new page about how to get dust off a screen, throw in a link to a site. The system could quickly get abused if Wired doesn't start adding the "nofollow" tag.
When Search Engine Land found the problem, they created a test page to demonstrate the problem with the system not having safeguards on it, and they were quickly labeled as spammers for creating a spam page. There was also a note posted saying that it was not possible to use "nofollow" in a Wiki-based environment.
Say what?
Wikipedia's use of "nofollow" raised quite a stir in SEO circles when it was first implemented, and it is still in use by them. The tag is a deterrent for people from abusing the system, and it could easily be added to Wired's system. Maybe they just don't know how?