I have a little question here: These days, what exactly is a white-hat link? In fact, what kind of link will Google NOT penalize you for? These days you can't: use blog comments use articles use press releases use guest posting use web 2.0 blogs (apparently mentioned at SMX Advanced) use paid reviews/mentions (nofollow "forced" by Google) So... what in the world CAN you use? Mentions on a news site (good luck with that). Social media (mainly twitter - but only gives short-term boosts only). Possible links on actual edu/gov sites (again, good luck with that). And uuuhhh... what exactly is left?