The influential breakingviews column thinks that Yahoo! (NASDAQ: YHOO) could use a shareholder activist (subscription required).

Citing its "discredited management team, a corporate strategy in need of a makeover, stock-price underperformance, a large free float with no controlling shareholder, cash on the balance sheet and many moving parts whose values don't appear to be adequately reflected in the Yahoo share price," breakingviews believes that an independent shareholder willing to take on an entrenched management team could unlock considerable value for the company's shareholders.

The question is how many shareholder activists -- who frequently prefer to target companies with more traditional, less complex business models -- would feel comfortable diving into a company that's been getting hammered by Google (NASDAQ: GOOG).

But the potential for value to be unlocked makes Yahoo! shares seem more interesting. Perhaps institutional shareholders could put pressure on the company to take more drastic steps to unlock value.

Companies that are good targets for activists are often good investments in general, with or without activist involvement. The first step for an activist in finding a good target is finding an undervalued stock. As Ronald Orol writes in an excellent column for TheStreet.com, "Good activist investors, at their core, are great stock pickers."

Oh and, if you haven't already, go buy Orol's wonderful book about activist investors, Extreme Value Hedging. It's one of the best, most original books about the market to come along in recent years.