@Eggie If you want to want to start a chat party, here is what you should do.
1) Announce the existence of the party. You have already done this.
2) Make a decision as to when the party will occur, and announce it. Make sure you take into account what the time is in different time zones. The time should be sometime soon, because in a week everyone will forget about it. Make sure you still have enough time to do the next step.
3) Get the word out. PM everyone you know and tell them about the party. Make sure to tell them the time (and what time zone), how much longer it is until the party (one hour, etc), and that they should PM everyone they know. You are going to be the main person who invites people to the party, so don’t count on anyone you didn’t invite to show up.
4) Show up at the party.