We all know that this is the 10th Anniversary of Free Comic Book Day, which is now something of a cottage industry. What you might not know is that there are some online activities going on as well.
For instance, Chris Sims (of Comics Alliance) and company at Awesome Hospital have created files for the first two chapters that you can download for FCBD. This is a great way to catch up on a cool webcomic.
Graphic.ly will be having several free offerings on its site for FCBD only.
Know of something happening online for Free Comic Book Day? Add it in the comments so I can check it out and add it to this list!