twilight47 - 9:04 pm on Sep 12, 2003 (gmt 0)
IMO, the SERPS change over a cycle period as the different update functions are processed (ie. freshing, indexing new pages, processing backlinks, etc..) This is all spread out over the cycle, making the index more dynamic. This all seems to get done in at least the amount of time as the old monthly updates.
The only thing I see as a current problem is the amount of spam still not filtered. :(