Investors usually cheer when a tech company announces a stock buyback, but does that mean...

Investors usually cheer when a tech company announces a stock buyback, but does that mean they're always good ideas? Netflix (NASDAQ:NFLX), which bought shares at much higher prices than the price it now plans to issue them at, is an egregious example of a misguided buyback, but others also exist. H-P (NYSE:HPQ), for example, might not be contending with balance sheet concerns if not for its billions in buybacks.