[Useless]

I'm really hoping that he's being tongue-in-cheek, but sometimes you can't tell.

I especially liked this one:
"Be careful spelling. Words like "PENS" and "ANGINA" can easily be mispelled to be words of the male and female anatomy respectively. This will cause Google to mistake your site for an ADUL† Site - and get it banned. Noticed how I used a special character to look like the letter "T" in the word before site. Use clever tricks like this throughout your documents."