Bruce Scheier: 2.5% of all passwords begin with 1234.

Randy: When people do studies like this, they often fail to point out that the passwords that begin with 1234 are often for low-risk domains. You know what my password is on my voice mail? It's 1234. Do you think that's my PIN number for my bank card? Obviously not.

Dylan F. Tweeney: The half-baked idea was that if everyone adopted nofollow, it would quickly make comment spam pointless. [cut] Comment spam? Thicker than ever. It’s had absolutely no effect on the volume of spam. That’s probably because comment spammers don’t give a crap, because the marginal cost of spamming is so low.

http://dylan.tweney.com/2006/05/26/googles-embarrassing-mistake/

Randy: This was all predicted from the beginning.

This tool analyzes a web page, searching for characteristics that search engines could consider spam.

http://tool.motoricerca.info/spam-detector/

I think the constant, never ending splogging that is occuring at Google's blogspot hosting service is proof enough. I wish Google would just give up on CAPTCHAs and try something new. This is getting stupid.