Is there any way to PM (private message) someone on Party Poker?
Yes and no. To do so, add this person to your Buddy list then invite them to a game. Instead of inviting them to a game though, simply type what you want to say into the box. Please note that other players can block your messages and I know that Party Poker logs these messages. So in other words, don’t try to cheat and share cards with your friends.