PM stands for ‘Private message’ which means ‘free private conversation’ with a member in free chat. If you would like to talk with a user separately in free chat then you can ‘PM’ him. This means that you are still in free chat but your conversation will be separated from the main free chat, so nobody else will see what you type to each other. This is a great way for models to get customers to know better and encourage them to go to private sessions. You can select between the tabs, so while you talk with a viewer in private conversation you still can type to the main free chat as well by clicking on the ‘FREE CHAT’ tab.
PM is a free service and only available for members who purchased tokens at least once. Use it as a promotion tool, to get the customer better before he sends you tips/gifts or take you to paid / private show.
DM means the same as PM. DM = Direct message.