Openpedia.org > Wikipedia Adds NoFollow
[SearchGrit - SEO, SEM, and All Things Search] What I do know is that Technorati is still full of spam and they've been using nofollow for many, many months now. Any reduction in spam has come about from active management by the owners of Technorati rather than some automated process of modifying outbound links.
Some related posts from Technorati and Google.
[Caydel.com] Caydels SEO Blog » Wikipedia: As far as I know, there was no sudden insurgence of link spam on Wikipedia. The Wikipedia community has in the past made it clear that they do not want nofollow links on Wikipedia, and the Wikipedia developers have publicly stated in the past that the setting to enable the nofollow tag was add to the mediawiki software for the use of smaller wikis, which do not have such large, active communities to fight linkspam.
[Feedblog.org] nofollow Considered Harmful: One side effect of NoFollow is to decrease the overall impact of blogs on Google's PageRank algorithm(s). Given the unexpected volatility that blog publishing systems, RSS, and related technologies insert into PageRank, NoFollow is good for Google, good for traditional publishers, and bad for bloggers in ways that were not publicly predicted in January.
[Ross.typepad.com] Ross Mayfield's Weblog: nofollow: I believe we helped start a general trend for RSS in wikis and this conversation may help raise the bar again. Even though the vast majority of Socialtext wikis are private (providing private syndication), our handful of public spaces will ping cooperatively (we ping Technorati today).
Reflected tags on Technorati: Blog, Wikipedia, Openpedia.org