Actually I had worked for small companies in china before I picked up my current position in one of large teleco service providers here in Toronto. Although I had extensive exposure to different technologies and different functions in small companies, along with my hard working as dog, after comparation with my current job, i must admit that my skills before were really couldn't claimed as experienced enough even I worked in similar fields for over 5 years.Of course those ancient traditional voice technologies in large companies are exceptions to our discussions here.I have been convinced that there are huge opportunities,but usually there are huge mess with most of startups.And there used to be many fallacy about those startups,and today most of their dreams come not true and even are gone out of business. Just my personal opinion per my own experience. FYI