Mastah_Blastah - 11:42 pm on Aug 23, 2000 (gmt 0) Maybe they spell check your page. :)
IMHO: Teragram is probably suppling AV with the ability to search their index quickly. Search Algo's are a hot property in Computer Science and if they have got a method for parsing HTML that fast then they are worth their weight. They almost certainly have nothing to do with the ranking, other than maybe optimizing search Algo's or AV's specs.
Maybe they spell check your page.