I have been out of the SEO game for over a year and from what I can tell a lot has changed in my absence. I think I have a good idea of what is working after reading through the forums but I would love to get everyone's opinions on this before I get back to work on SEO domination again. If you could get any type of inbound links what would they be? Social links? Authority site links? Web 2.0 links? EDU links? Guest Posts? Directories? Blog Comments? All of the above? Other?