Safe Harbor Games
My favorite place to play backgammon online for FREE wit other folks from around the world.
It has the a similar look and feel as the old "MSN Zone Games" site of old. Many of the Zone players now play here since the Zone shut down.
Check it out and you will be glad you did,
They have friendly, rated games as well as Hourly tournaments which is a hard thing to find these days.
Their site also has:
Canasta, Cribbage, Hearts, Spades, and Trivia.