$Viruscoin
The intent behind Viruscoin was to take the bad rep away from Bitcoin. For example: Bitcoins have been used in underground communities to pay for viruses and other potentially illegal goods. The Viruscoin developers saw this as a threat to the future of Bitcoins (via attacks from mainstream media), so they created the Viruscoin as a substitute for those kind of transactions. The Viruscoin is the only cryptocoin that isn't trying to compete with the already well established Bitcoin.
