On the Nxt forum there is a stat that 509 was the most online ever , but because of the severe decrease in volume and market cap adoption may have reversed.
Adoption has definitely reversed.
18 months ago, there was a brief wave of hype. That hype and pump are long over. Since June 14, the price has been plummeting.
http://coinmarketcap.com/currencies/nxt/#chartsThe conceit that NXT has any permanency and is
Here To Stay is absurd.
SuperNet, the scam platform built on NXT's scam platform, is likewise dying because its hype and "investments" never produced anything of value:
http://coinmarketcap.com/assets/supernet-unity/#chartsThere is no likely scenario where this trend turns around.
Every day Bitshares, ETH, and rootstock.io spend coding is another day NXT's status as obsolete abandonware is confirmed.