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httpwebwitch - 5:55 pm on Apr 8, 2008 (gmt 0)
When it comes to malicious SEO, we can only defend against aggressors if we understand their tactics. If there's a black hat technique compromising natural SERPs, this is surely the place to divulge it. Sure, some malicious types might use the information for evil purposes, but it's likely that we can figure out a way to thwart the technique, and bring it to the attention of the non-evil folks at GOOG. And even if there is no remedy, it is helpful if a webmaster can identify if they've been a victim.
There is a new one that is very quick to work using 301's that I daren't put in here but a black hat "associate" of mine said she's dropped quite a few of her client's competitors