Powdork - 1:09 am on Mar 12, 2005 (gmt 0)
This theory has holes. Holes the size of really big holes. This theory holds no water.
It is the colander of theories.;)
Just poking fun, but what steveb said above is true. It may be something defined or triggered individually by a single word within the query, but certainly not that level of volume. I would suggest that there may be another parameter associated with a keyword's popularity that is used. I would suggest something like level of search activity for words within the query, or the activity of the query as a whole.