I guess it s not the first post on this topic but here s my question. As far as I ve read, google does not like alias pages...But as far as i ve seen, they don t do much to fight it.

One well known seo company, claiming to netboost your site is using this way to optimize for all for its customers. How come they do not get kicked out ? They do it openly and even have google s logo on their site?

Does anyone know the real google policy!?Is it safe to use it?