Where is the engineering rigor? Where is the quality assurance? Are all the edge cases handled? Security review / penetration testing? What is the performance when you serve 10K users simultaneously? Can one actually build a business out of the "product" of a hackathon, or does it basically need to be thrown away and re-architected properly? Is it even a goal to build something viable, or is it the whole event simply a way to spend corporate marketing money on buzz?