Hello! I'm one of the co-admins of MacJams.com. We really hope you find this site useful and urge all of our users to send us feedback on the site, and especially any suggestions for improvements. We're constantly working on changes to the site to make it a better place to hang out and communicate with other users of Apple's GarageBand software.
Regarding my profile image: As anyone who has moderated or administered a website can surely attest, there are more ITGs out there than you can shake a stick at. I saw this image online and it made me think of such characters. Original content and context are here: