diff --git a/FeedlySharp/FeedlyClient.Categories.cs b/FeedlySharp/FeedlyClient.Categories.cs
index 1736a0f..749b459 100644
--- a/FeedlySharp/FeedlyClient.Categories.cs
+++ b/FeedlySharp/FeedlyClient.Categories.cs
@@ -16,18 +16,15 @@ namespace FeedlySharp
     }
 
 
-    public async Task UpdateCategory(string id, string label, CancellationToken cancellationToken = default(CancellationToken))
+    public async Task RenameCategory(string id, string label, CancellationToken cancellationToken = default(CancellationToken))
     {
-      await Client.AuthRequest<FeedlyUser>(HttpMethod.Post, String.Format("v3/categories/{0}", id), new Dictionary<string, string>()
-      {
-        { "label", label }
-      }, cancellationToken);
+      await Client.AuthRequest<FeedlyUser>(HttpMethod.Post, String.Format("v3/categories/{0}", ValueToResource("category", id)), new { label = label }, cancellationToken);
     }
 
 
     public async Task DeleteCategory(string id, CancellationToken cancellationToken = default(CancellationToken))
     {
-      await Client.AuthRequest<FeedlyUser>(HttpMethod.Delete, String.Format("v3/categories/{0}", id), null, cancellationToken);
+      await Client.AuthRequest<FeedlyUser>(HttpMethod.Delete, String.Format("v3/categories/{0}", ValueToResource("category", id)), null, cancellationToken);
     }
   }
 }
diff --git a/FeedlySharp/FeedlyClient.Preferences.cs b/FeedlySharp/FeedlyClient.Preferences.cs
new file mode 100644
index 0000000..20a729e
--- /dev/null
+++ b/FeedlySharp/FeedlyClient.Preferences.cs
@@ -0,0 +1,24 @@
+using FeedlySharp.Models;
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace FeedlySharp
+{
+  public partial class FeedlyClient
+  {
+    public async Task<Dictionary<string, string>> GetPreferences(CancellationToken cancellationToken = default(CancellationToken))
+    {
+      return (await Client.AuthRequest<Dictionary<string, string>>(HttpMethod.Get, "v3/preferences", null, cancellationToken)) ?? new Dictionary<string, string>();
+    }
+
+
+    public async Task<Dictionary<string, string>> UpdatePreferences(Dictionary<string, string> preferences, CancellationToken cancellationToken = default(CancellationToken))
+    {
+      return await Client.AuthRequest<Dictionary<string, string>>(HttpMethod.Post, "v3/preferences", preferences, true, cancellationToken);
+    }
+  }
+}
diff --git a/FeedlySharp/FeedlyClient.User.cs b/FeedlySharp/FeedlyClient.User.cs
index 338f5d7..61acc19 100644
--- a/FeedlySharp/FeedlyClient.User.cs
+++ b/FeedlySharp/FeedlyClient.User.cs
@@ -16,7 +16,7 @@ namespace FeedlySharp
     }
 
 
-    public async Task<FeedlyUser> UpdateUser(Dictionary<string, string> parameters, CancellationToken cancellationToken = default(CancellationToken))
+    public async Task<FeedlyUser> UpdateUser(dynamic parameters, CancellationToken cancellationToken = default(CancellationToken))
     {
       return await Client.AuthRequest<FeedlyUser>(HttpMethod.Post, "v3/profile", parameters, cancellationToken);
     }
diff --git a/FeedlySharp/FeedlyHttpClient.cs b/FeedlySharp/FeedlyHttpClient.cs
index 4bab7ed..208f8ed 100644
--- a/FeedlySharp/FeedlyHttpClient.cs
+++ b/FeedlySharp/FeedlyHttpClient.cs
@@ -32,7 +32,21 @@ namespace FeedlySharp
         throw new FeedlySharpException("This request requires an access token.");
       }
       
-      return await Request<T>(method, requestUri, parameters, null, cancellationToken, new Dictionary<string,string>()
+      return await Request<T>(method, requestUri, parameters, null, false, cancellationToken, new Dictionary<string,string>()
+      {
+        { "Authorization", String.Format("OAuth {0}", AccessToken) }
+      });
+    }
+
+
+    public async Task<T> AuthRequest<T>(HttpMethod method, string requestUri, Dictionary<string, string> parameters = null, bool bodyAsJson = false, CancellationToken cancellationToken = default(CancellationToken)) where T : class, new()
+    {
+      if (String.IsNullOrEmpty(AccessToken))
+      {
+        throw new FeedlySharpException("This request requires an access token.");
+      }
+
+      return await Request<T>(method, requestUri, parameters, null, bodyAsJson, cancellationToken, new Dictionary<string, string>()
       {
         { "Authorization", String.Format("OAuth {0}", AccessToken) }
       });
@@ -46,24 +60,36 @@ namespace FeedlySharp
         throw new FeedlySharpException("This request requires an access token.");
       }
 
-      return await Request<T>(method, requestUri, null, body, cancellationToken, new Dictionary<string, string>()
+      return await Request<T>(method, requestUri, null, body, true, cancellationToken, new Dictionary<string, string>()
       {
         { "Authorization", String.Format("OAuth {0}", AccessToken) }
       });
     }
 
 
-    public async Task<T> Request<T>(HttpMethod method, string requestUri, Dictionary<string, string> parameters = null, dynamic body = null, CancellationToken cancellationToken = default(CancellationToken), Dictionary<string, string> headers = null) where T : class, new()
+    public async Task<T> Request<T>(
+      HttpMethod method, 
+      string requestUri, 
+      Dictionary<string, string> parameters = null, 
+      dynamic body = null, 
+      bool bodyAsJson = false, 
+      CancellationToken cancellationToken = default(CancellationToken), 
+      Dictionary<string, string> headers = null
+    ) where T : class, new()
     {
       HttpRequestMessage request = new HttpRequestMessage(method, requestUri);
       HttpResponseMessage response = null;
       string responseString = null;
 
       // content of the request
-      if (parameters != null)
+      if (parameters != null && !bodyAsJson)
       {
         request.Content = new FormUrlEncodedContent(parameters);
       }
+      else if (parameters != null)
+      {
+        request.Content = new StringContent(JsonConvert.SerializeObject(parameters));
+      }
       // additional headers
       if (headers != null)
       {
diff --git a/FeedlySharp/FeedlySharp.csproj b/FeedlySharp/FeedlySharp.csproj
index afcafaf..110cc7a 100644
--- a/FeedlySharp/FeedlySharp.csproj
+++ b/FeedlySharp/FeedlySharp.csproj
@@ -36,6 +36,7 @@
   <ItemGroup>
     <Compile Include="Extensions\JsonExtensions.cs" />
     <Compile Include="Extensions\UriExtensions.cs" />
+    <Compile Include="FeedlyClient.Preferences.cs" />
     <Compile Include="FeedlyClient.Tags.cs" />
     <Compile Include="FeedlyClient.Auth.cs" />
     <Compile Include="FeedlyClient.Categories.cs" />