It's because not all relays respond in a timely manner and contact lists are different sometimes for different people on different relays. It's just not a good metric. 

 Got it. I stopped tracking it long ago. Like, my second week here 😂 

 I get it, people want to see the size of their audience to make sure they're not speaking into the void, but being engaged and social also helps this too.  

 I believe that this demand will be met in the future with clients focused on detailing npub audience with charts, tables, numbers and animated stuff #grownostr

nostr:note18agvqpu3l5gmrx6vuhtf788k79chnd55aarljvr6zgn4mlxrqsjs3unznn  

 There are a lot of charts libs, the challenge is the algorithm that collects the audience information and converts it to graph structure