Good contacts to have

Cozumel - updated news, information and reservations.
czm4you - information about Cozumel events and businesses.
Cozumel My Cozumel: A Reliable Travel Resource.

Real Estate:

Cozumel Living real estate.
Cozumel Capital island property.
Casas Cozumel realty.

Things to do:

Mexico kiteboarding with Raul in Cozumel.