Log analysis

Someone asked for more information and my opinion about log analysis, and its inaccuracy. The speaker was just warning us to know what our log-analysis software is doing. Mine tells me that about 25% of my pages served were cached. How it knows that, I'm not sure.

As far as the spider activity, the percentage is going to vary depending on your normal traffic (of course). My reps using my website adds up to a lot more traffic than any spider could, so yes, I don't really care if the spiders are included in my traffic. I can exclude certain IP addresses, but nearly all my reps are on dial-up, with dynamic IPs.