Wikis: NEVER use directly to your money site.
Articles sites?: Don't use low quality spammy article sites.
High PR Blog Ntwks: Be careful while using directly to your money site, as if the network got hit in future, then obviously your site could be the victim as well. You use it on tier 2 to strengthen your web2.0s.
Web2.0: Use almost 700+ words article with one image and video, also use one link in each post to some authority site's article such as wikipedia. Make sure to change the default theme with the custom one. As, it looks more natural to Big G. (you can find free ones via Google).
Point out all the spammy backlinks to tier3 and less spam to tier 2.