Very good question. Been someone who is quite busy in real life due to having an offline job, I apportion certain time to visit here. I don't really make contents but if i do, I set aside at most 30 minutes to come with a content I can easily spring up.
For comments, after getting to work and after work, I visit just like I use to when I go to Facebook and the likes to make some comment's but this time around with specific target of comments to make.
So basically, been here is like a second job so I create dedicated time and follow through with it no matter how busy the day goes.