Online Identity

You want to be secure about your online identity, in terms of what you share and where. On the other hand, you will find that many of the teachers and tech folks use their real names, as this is fast becoming a part of your digital teaching portfolio. The more you do online, the more frequently you will run into people from your online interactions when you go to conferences. You choose how you are identified and make it match with your comfort level for the web; feel free to start more obscure and become more transparent with your identity over time. There is much to be said for taking control over your digital presence on the web, including what pops to the top of a Google search for your name. If you haven't googled yourself, you should, just to see what's out there.
Listen to these suggestions if you choose:

Visual identity : creating an Avatar Your identity is tied not only to your user name, but also to the visual representation of yourself in an avatar. Most online communities have a spot for you to put a picture that represents you (60 pixels by 60 pixels, usually). Feel free to use a cartoon, or a photograph that is not you, or to use a photo that IS you. It’s helpful for people to know who you are on sight at conferences, but work with whatever level of visibility you are comfortable with. See examples below for ideas: