I'd change this text: "Hackathonia is about bringing bright, motivated people together to build amazing apps in competitive yet collaborative, team-based competitions known as "Hackathons"."
I'd put something like:
"Hackathonia is a great way to find "Hackathons" near you. Hackathons bring bright, motivated people together to build amazing apps in competitive yet collaborative, team-based competitions."
That way you get to the meat of what you do faster.