A lot of the autoblogging guides say that you should not have more than 5 or 6 blogs on each IP address. If you have too many blogs on one IP address, the SERP goes down.

But if you have 100 blogs on 20 IP address, do you use the same adsense account on all 100 blogs? If so, doesn't that mean that Google can figure out that they are all run by the same person, and decrease your rankings?

Also, does having a lot of blogs make the adsense team more suspicious of you?

When you enter Adsense code, you will be monitored with Google Bot whether you use Google Analytic or not . My personal experience is after 2 month 8/10 autoblogs ar de-ranked and got Panda either, but the other 2 live and make money.