Newznab providers can be configured by the end user.

NzbDrone.Core/Repository/NewznabDefinition.cs

@@ -0,0 +1,20 @@
+using System;
+using PetaPoco;
+
+namespace NzbDrone.Core.Repository
+{
+    [TableName("NewznabDefinitions")]
+    [PrimaryKey("Id", autoIncrement = true)]
+    public class NewznabDefinition
+    {
+        public int Id { get; set; }
+
+        public Boolean Enable { get; set; }
+
+        public String Name { get; set; }
+
+        public String Url { get; set; }
+
+        public String ApiKey { get; set; }
+    }
+}