I asked someone the following question.. in the following code... ( from MSDN Mag 2010 issue ( thomas erl )) [Description("PartitionKey=... Rowkey=AccountId")] public class UserAccountBalance : TableServiceEntity { public double Balance { get; set; } public UserAccountBalance() : base(Guid.NewGuid().ToStrin... Guid.NewGuid().ToString()) { } public UserAccountBalance(Guid userId, Guid accountId) : base(userId.ToString(), accountId.ToString()) { } } is this creating 1 partition for every UserID ......