I have been working online since 98. I have always been the one to be careful, build for the long term and think things through and have a plan. Long story short... i've learned time and time again, that you will always lose to those who aren't careful, don't care and play for the short term, either deliberately as part of a plan, or just because they are ignorant shitheads without the brains to think about consequences. I despise that mentality (and many of those people here) but its a simple truth, I can't ignore. I always worked hard to get away from the aggressive tactics we used believing it would never last and... here we are... very little has changed years later and all that happened was that I constantly cheated myself by not being as aggressive as I should have been.
I wouldn't worry about. You should be using a ton of domains and tons of spun comments anyway and not linking much direct to your money sites. The time you waste trying to be careful will slow your progress tremendously. Plan around being sloppy, around volume (i.e. building links also to your 2.0 sites/parasite host pages etc) in the process and just blast away and never look back.
Trust me.. when it comes down to a contest between your careful planning and some 1/2 retarded and stoned 15yr old doing 1,000,000 xrumer blasts per day, you'll lose