To quit or not to quit

While everyone seems to be worrying about the Whatsapp acquisition by Facebook, there are a whole lot of other people who are worried about their careers. A lot of companies have gone trough the exercise of laying people off in the name of skill re-balance, title inflation, cost cutting and many other fancy words used in the industry. In certain cases, I have heard the actual reason behind the firing was 'not sucking up to their bosses'. In this context, there are a few questions I would like to post, based on the talks I had with my colleagues and few friends working in other organizations.