This was just posted this week on BRS. It should answer some questions. I thought curing was to get the phosphates out:
http://www.bulkreefsupply.com/video...s-what-is-the-best-way-to-cure-dry-live-rock/
http://www.bulkreefsupply.com/video...s-what-is-the-best-way-to-cure-dry-live-rock/