ItsYourTurn.com is an online game site where you are given several days to make a move; there are all sorts of games available. And you can register for free. I have 20 games in progress, which is the maximum amount allowed without buying a premium membership.
I like the site because
A. It's free
B. There are a lot of games available
C. Many of the variations are cool
D. Since you move one turn at a time, you don't need to set a lot of time aside to play.
E. There aren't any game applets that take forever to load.
F. If you want to play someone from real life in a board game, you don't have to be available to play at the same time.
(me, I often play chess games with one of the teachers from school via IYT.)
G. You don't have to keep track of any boards- the system does it for you
www.itsyourturn.com also features variations on these games, along with tournaments in the base games and the variations. Ladders in the base games and variations have just been added.
I am in a Battleboats ladder. (I used to be involved in a Chess ladder as well, but then IYT limited no0n-members to only one ladder...)
Here is my Battleboats ladder info