I am running a couple of websites. Some are charity websites and i really care for the issues they deal with. Others are pure moneymaking websites with adsense for monetization. The charity projects are a constant loss (i never make profit with them). I do not use much blackhatseo yet. Strongly optimized texts but no backlinking etc. I consider now to use BHS techniques in order to increase my revenue. However iam afraid that my white hat seo charity websites might get negatively affected by using blackhat techniques. I would like to grow the charity sites but therefore I'd need more revenue (at least $50-$100 dollars more per month for reasonable changes). Google knows i am the owner of all these websites through webmaster tools, adsense and analytics. Do Blackhatseo tactics (like bot linkbuilding) on one page have the potential to kill my other sites? Then its not worth it and i will go the slow slow slow way.