Well I log in a couple of times a week. Maybe more or less it depends.
I pretty much use it to see what is being shared. I do find some of the articles shared interesting.
I often visit through my laptop but sometimes I will use my ipad or phone.
No, I don't use email notifications.
I use the clean theme.
I don't really use PMs here. I think I have might have gotten some PMs in the past and sent them out but it's been a while.
I haven't use the chat in the long time. Maybe I should spend there though.
I use my feed and global to browse content.