how many total people do you think have ever gone on/participated in a text battle forum?

[oats]

I mean have tried their hand at it at least once, not just breezed through or posted in discussion on occasion. I have a really limited scope here, but I was wondering if the number would best be speculated in thousands or tens of thousands or hundreds etc. My guess would be at least 20,000 people have had some sort of involvement with a battle or open mic of some sort.