I'm not in marketing, but I open my Facebook page a few times at work daily. It helps break the monotony of work. Keeps me from walking around the office to chat with other people or gossiping by the water cooler
Iwork at home so i can use Facebook whenever i like. of course I put it aside to prioritize work but I can say I'm always online.lol
I do use facebook at my work place. I would use it for a relax, to see somthing new or have a chat with friends.
As i am not facebook addicted so just to check notifications and comments . just logged in check it and logged out .
I use Facebook once or twice in my working place. But it depends on the work pressure. In some days the work pressure is less in that day I use Facebook but in the busy working day i don't use Facebook.