Activists have been on the rise over the last few years and it depends who you ask whether they are agents of the devil or the good guys just driving boards to create higher returns. Some activists are now very high profile as the whole area of shareholder activism grows. You've got the attention getters like Dan Loeb of Third Point. His signature is pithy, hyper critical public letters to boards eviscerating management and often demanding a change, as he did at Yahoo. You've got the old salts like Carl [...]