Looks quite alive to me:
https://blockchain.info/charts/n-transactions-excluding-popular?timespan=all&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=
https://blockchain.info/charts/n-unique-addresses?timespan=all&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=