Undetectible Spam
In a comparison between Google Blogsearch and Technorati, Scoble noted that he can' tell the difference between real blogs and fake blogs:
I didn’t see any obvious spam, did you? I think there might have been one on Google’s results, but it’s hard to tell spam blog, or splog, from actual real blogs anymore.
If he can't tell if something is spam how will the average blogger? I have seen some stuff that was virtually auto-generated blogrolled by authoritative bloggers.
- Y! MyWeb

How about, if it has Adsense
How about, if it has Adsense on it it's probably spam?
Aggregators and Remixers
There's a whole body of people in lots of industries who don't see aggregators and remixers and spammers. 5 - 20 industry news stories during the day and 1 or 2 real people posts and life is good. Sub-optimal adsense can really work wonders. As does adsense that only appears after a post has aged or shifting from sub optimal to optimal upon detection of an SE referral can make a site look a lot less like a money grubbing MFA spammer and more like a valuable resource
Scoble
more than likely couldn't pour water out of a boot if the directions were written on the heel. He should stick to name dropping and joining pointless crusades and causes. Trackback spam often leads to... a spam-filled blog.
Hmm is that because.....
... most blog content is such utter shite in the first place :)