This weekend's sellout of the San Diego Comic-Con was a disappointment for many and ultimately satisfying for some -- but no doubt everyone got tired of seeing the TicketLeap frog when they refreshed their browser.

Now Isotope Comics in San Francisco is commemorating the occasion with a free pin, featuring the newly coined "Fail Frog."

"Because I know you’ve all been looking at this frog for what seems like forever, we’ve decided to brighten your day a little and bring a great big smile to your face," writes storeowner James Sime. "The Isotope is going to hook you up with your very own San Diego Comic Con 2011 Registration Disaster commemorative Fail Frog button absolutely free of charge! Why? Because we’re just such huge sweethearts! Send a letter to the Isotope address with a self addressed stamped return envelope and I will personally send you one of these Fail Frog pinback beauties while our supplies last."

Isotope is located at 26 Fell Street, San Francisco, CA 94102.