is there a way to add friends by game screen name instead of by email
Left click on name, their profile will pop-up. look toward the top right and click 'add as friend'.
they have to accept for it to be finalized.
Siders Best
Go to any other players profile page and there you will find an 'Add As Friend' button.
You can also search for players from the 'WGT Community' menu above.