Robsp - 9:39 am on Mar 12, 2004 (gmt 0)

And if I may add to shorebreaks' comments I also wonder why it is so inconsistent. You can do the same estimate 5 minutes apart and get a few 100% difference.

What I think would help is to add a column to the estimator that gives the average daily impressions for a keyword (Overture style but then daily). This helps the more experienced members make better estimates as they "know" what kind of CTR's they can expect.