Years ago, I let many of my domain names drop. They were obviously snapped up quickly. One of which was SEO is for Girls. It got used for some black hat scheme and used up. I promised myself I would buy it back one day. Finally did that. No more dragging it through the mud and making it do dirty things. No more black hat crap with my precious, only to be discarded later. I will keep her safe, having put her out to pasture now (or the domain equivalent).