I'm all for discussing promotional ideas. I don't think we can rely on Slashdot or Digg, however, because those gains tend to be short-lived. (BH has been Dugg and Slashdotted before; we get a big spike in traffic, but it's not sustained.) I have a few thoughts in this area, including (1) creating some unique, viral feature on the site such as a longevity quiz and (2) encouraging people to refer others to the site through a linking competition (something like the SuicideGirls Army).