I'm usually always online off an on throughout the day. I spend countless hours trying to build my site, mostly because were new, but I also plan to remain active for our entire existence. Only way the community will keep growing.
How much time do you spend on your site(s) each day?
I don't own any site as at now. But when I did, I used to spend up to an hour daily. That was enough time to sort out queries, respond to private messages and engage with members.