Why Spam Google Groups?
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The Google Webmaster Help Group which I participate in has been inundated with spam lately from a certain spammer looking to push the 2008 Peking Olympic Games Souvenirs.
As seen below”

You will notice that the group’s CMS nofollows all links in a post which would make you wonder, “why would someone go to so much effort to bother spamming the groups?”
The answer is: Because it works. Well. Very well.
More and more people have been complaining lately that after discussing their site in GWHG that the thread will outrank their own site. Of course some of the sites discussed in the group are indeed penalized and just about anything will outrank it, but it has been noted the groups are getting more visible in the SERPS lately. The fact is that Groups material is indexed quickly and ranks quite well, irregardless regardless of content or value. Another aspect working for the Google Groups Spammer is the fact that Google has the groups in many languages all on their own TLD, in essence replicating their spam on many more URLs than just the one they planted it on.
The spammer may not be getting any link love from the Google Groups spam pointing to 200836.com but for his keyword phrase, “Peking 2008 Olympic Games”, he’s doing remarkably well in Google.
In the first 100 results Google Groups spam occupies 23 positions (screenshot). To be fair to Google, they aren’t the only target of this spammer as some Yahoo! groups and other forums are also spammed, for a total of 40 of the top results (screenshot). By any standard 40% of a search result being spam drops is not good.
With this Minty Fresh Spamdexing the spammers no longer have to worry about the links they generate but rather use the forums themselves as doorways to their spam site, which by the way is indexed.
On March 5th, 2008, Mercy said:

