This is sort of like asking whether you should marry the person you're seeing. Um, it depends. If you believe in the opportunity of the company or believe you

This is sort of like asking whether you should marry the person you're seeing. Um, it depends. If you believe in the opportunity of the company or believe you can influence and contribute to a real success there, you should consider this an opportunity to prove that, derive benefit from it, and increase your role/responsibility/compensation there. These departures are not generally good signs though. Have you considered asking your boss why he/she left? If they're firing/attriting under-performers, that's one thing; if the good people are all jumping ship, as the new person you have to ask yourself what they know that you don't.