1. Don't be a dick
2. It is EVERYONE's responsibility to make the game fun for everyone (including yourself) around the table.
The first is common sense but is sometimes forgotten.
The second is a little trickier as it requires empathy and communication.
I can have fun playing Go Fish if I know that is what everyone wants to play and I enjoy the company.
"What happened to yer blog Mr. Henchman Abuse?"
3 hours ago