Look at the PEG of approximately 1. YHOO 's PEG is over twice that, as is that IACI . Perhaps that's not enough proof for you. Well, co you like cash? GOOG only has $17 billion of it sitting on its balance sheet. That's cash totally unencumbered by debt. Still not convinced? Consensus earnings estimates clock in at $21.05 for this year. Right now, it's trading at a multiple of 29.51. That translates to a reasonable price of $621. Right now, it's about $403. I think that's a pretty good margin of safety.