Go to this website and sign up for an account. Be sure to use the same email address you use to log in here at RN. Simply upload a picture and, voila! You now have an avatar that can be used on this site and others that use WordPress software. It takes two minutes, so why not?
Also, many of you have noticed that we now require you to log in to comment (actually, most of the regular commenters registered long ago). Sorry, it had to happen eventually, but we’re getting killed by spam and trolls. Register here, and log in here (the links are in the bottom of the right sidebar, as well). Thanks for your understanding.