ken_b - 3:34 pm on Jun 27, 2012 (gmt 0)
Almost every site I work with is in the Yahoo Directory - and almost all of them have had no Penguin or Panda problems.
Just as a counter point, or maybe to reinforce the "almost" part of that quote, having a Yahoo Directory link is no guarantee of avoiding negative affects from Panda or Penguin. I have unsolicited/unpaid links from the Yahoo directory, ODP and BOTW.
After several years at or near the top of the relevant page 1 serps, I've been pounded to a pulp by that angry little Pangry.