Axacta - 4:55 pm on Sep 20, 2002 (gmt 0)

For 6 months my most important keyword phrase has been number 1 or 2 in the SERPS and then the other day it just drops to number 35. Although my site is constantly spidered by Inktomi, MSN has always listed it from Zeal. Does anybody know anything about Zeal listings being downgraded? And how can I check to see if I am listed in Inktomi?