One metric to track usage is the number of transactions per day: - Bitcoin: ~50k transactions/day (http://blockchain.info/charts/n-transactions http://blockcha

One metric to track usage is the number of transactions per day: - Bitcoin: ~50k transactions/day (http://blockchain.info/charts/n-transactions http://blockchain.info/charts/n-transactions) - Litecoin: ~5k transactions/day (http://ltc.block-explorer.com/charts http://ltc.block-explorer.com/charts)