Good contacts to have

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

Rentals and Places to Stay:

At Home in Cozumel.
Costa del Sol vacation homes.
San Miguel Oasis apartments.
Las Ventanas, Cozumel condos.
Casa Viento guest house.
Summer Place hotel in Cozumel.
Vacation Rentals Your Way
CBP - Property Management.