Why?- Because it's a BL feeder blog. You get nailed on aggressive back-linking or whatever, they'll take out your whole feeder network because you left a massive footprint. It's more of a precaution ie., damage control then anything. Trust me, when you start making real money, you will have OCD stalker fucks following you everywhere because you kicked the shit out of them in the SERPS.
The best solution is to use Stats counter because you can drop this into any free blog, grab the stalkers I.P. and then put
IP Blocker on your free blogs. Why IP blocker? - because this tool has an option that is brilliant, it redirects a selected IP anywhere you want on a second party blog. If in a good mood I'll just redirect them to mylazysundayDOTcom because this will insure they'll have to shutdown their system. If in a bad mood, redirect them to a site where you can read everything thing they type until they catch on. I am joking of course..:)
Whatever happens they'll usually spend the next month complaining to Google, if you're using blogger, they'll say the site is promoting a virus only to have Google think their crazy as the stalker can't figure out it's only their I.P. as they just then go away. In short, if you use blogger, the default stats won't show I.P's and why I highly recommend you drop in Stats Counter.
Anyway, I've seen some hardcore "
hand written" blogdogs before, but updating 80 blogs without the aid of feeds and purely organic? You'd have my respect if you make it past six months. You can go to DevShed and buy 50 accounts for $100 bucks. They will come with separate emails as you'll need
WebMail Notifier to manage them as you make sure to tell the seller, you also want a mix of Gmail, Hotmail, Yahoo, AOL, etc.
Depending on what you're doing or targeting key phrase/word for AdSense/Amazon etc the less of a footprint, the more money you'll make as I've posted my AdSense revenues here making $400-$500 a day as they are NOT my primary.