Question for Arma Wiki

[Agility]

Just curious who updates it and how often is it updated?

[takburger]

Just curious who updates it and how often is it updated?

Depends what. As for a wiki, on every article you can check the 'history' tab which is on the top of each window, it shows the list of revisions, what have been changed etc.

[sinewav]

Just curious who updates it and how often is it updated?

The second entry in the sidebar navigation is Recent Changes. You can see how often edits are made and by whom. Most of the activity is because of tournaments but a fair amount goes to documentation too.