#9 is a sore one for me..... every part-time job paying low wages and no benefits thinks that for some reason they are the main focus of your life. When I was working part-time at Officemax, my supervisor wanted me to have 24-7 open availability, and got pissed when she would call and I couldn't come in because I was at my other job that paid twice as much.
If companies aren't going to pay you enough/give you enough hours to pay your bills, they can't well complain that you have another job to pay them.