As far as reading the SE rules, google consideres any type of SEO wrong. Optimizing your pages and cloaking, using doorway pages, etc is the same as what these guys are doing, as long as they provide relevant results.
As for SE only being a bonus, alot of people beg to differ.
Don't get me wrong, I'm pretty new to SE but being experienced in coding and reverse engineering I'm hoping to plan a nice retirement with it
