Think about your reputation. Like it or not, being a professional writer can be a high-profile occupation. This isn't to say that you will have paparazzi parked outside your house, but many employers do care about the general reputation of the writers working for them because the writers are a reflection on the company. For this reason, you will want to watch some of your online activities. If you have a blog or website which you regularly contribute to where you lament about personal problems or political agendas, then you might run into a situation where a potential employer stumbles across your site and decides to not hire you based on the things you say in your diatribes. If you have a burning desire to let the Internet community know about how much you hate your mother-in-law or how you can't stand the local politicians in your town then consider adopting a pen name for your more personal posts. It would be a shame for you to miss out on a great writing job because you felt compelled to compose a blog entry recanting the wild, drunken night you had which resulted in some questionable activities. Remember that just because the Internet allows people to tell dazzling stories to everyone does not mean that you should necessarily reveal your life story and opinions to anyone who can log on to a computer. Watch out for TMI: Too Much Information.