I should clarify. I'm extremely familiar with spammers and their tactics, and I have a sufficiently strong technical background to back up my claims. I have my own domain (several in fact), and everything sent to this particular domain goes into my inbox. I monitor my mail logs regularly, and I can say with confidence that my domain has never been subjected to dictionary or other attacks. I've owned this particular domain for many years, and nobody owned it before me.
SlikStik is not the first company to leak a tagged email address, but the number of companies to have done so is quite small. I have a couple hundred tagged addresses in the wild, and only half a dozen or so have ever been spammed. One was the classic Ameritrade fiasco-- they leaked two different addresses before closing their security hole.