The announcement came in their e-newsletter as follows:
Good Certifies on VMware ESX Server
Good is pleased to announce our certification on VMwares ESX Server 2.5 and 2.5.1, the industry-leading product for server consolidation. For customers wishing to take dvantage of the lower total cost of ownership that comes from running multiple applications on a single server, ESX Server allows enterprises to lower hardware acquisition and maintenance costs, consolidate idle system resources and increase operational efficiency. The ability to co-locate the GoodLink server with other important applications on a single physical server will enable customers to shrink their total cost of ownership in building mobile solutions. To find out more about VM Wares ESX Server, visit http://www.vmware.com/solutions/consolidation/.
My enterprise wasn't part of the certification group but we migrated our Goodlink server over to a VM at the end of May and have had no issues. The project was a P2V of our original server as well.