BillyS - 3:05 am on Dec 31, 2006 (gmt 0)

This is one of those documents I'm going to have to print out and read. About all I've figured out is what Tedster already mentioned.

Google knows what types of phrases should appear together and by looking for certain combinations of phrases it can paint a better picture of what the page is all about. However, if certain phrases are used together too frequently then a spam filter is tripped.