diff --git a/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js b/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js
index 23438351c..5ade74863 100644
--- a/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js
+++ b/extensions/freebase/module/scripts/dialogs/freebase-loading-dialog.js
@@ -42,7 +42,7 @@ FreebaseLoadingDialog.prototype._createDialog = function() {
   this._elmts = DOM.bind(dialog);
   this._elmts.cancelButton.click(function() { self._dismiss(); });
 
-  var provider = "www.freebase.com";
+  var provider = "freebase.com";
   var authorization = this._elmts.authorization;
   var loadButton = this._elmts.loadButton;
 
diff --git a/extensions/freebase/src/com/google/refine/freebase/oauth/FreebaseProvider.java b/extensions/freebase/src/com/google/refine/freebase/oauth/FreebaseProvider.java
index 994564156..27593d8df 100644
--- a/extensions/freebase/src/com/google/refine/freebase/oauth/FreebaseProvider.java
+++ b/extensions/freebase/src/com/google/refine/freebase/oauth/FreebaseProvider.java
@@ -52,19 +52,23 @@ public class FreebaseProvider extends Provider {
     
     @Override
     public String getRequestTokenServiceURL() {
-        return "https://" + host + "/api/oauth/request_token";
+        return "https://api." + host + "/api/oauth/request_token";
     }
 
     @Override
     public String getAccessTokenServiceURL() {
-        return "https://" + host + "/api/oauth/access_token";
+        return "https://api." + host + "/api/oauth/access_token";
     }
 
     @Override
     public String getUserAuthorizationURL() {
-        return "https://" + host + "/signin/app";
+        return "https://www." + host + "/signin/app";
     }
     
+    @Override
+    public String getRealm() {
+        return "http://api" + host + "/";
+    }
     
     @Override
     public OAuthConsumer createConsumer(String consumerKey, String consumerSecret) {
diff --git a/extensions/freebase/src/com/google/refine/freebase/util/FreebaseUtils.java b/extensions/freebase/src/com/google/refine/freebase/util/FreebaseUtils.java
index ec9d0c0d8..61b1b91e5 100644
--- a/extensions/freebase/src/com/google/refine/freebase/util/FreebaseUtils.java
+++ b/extensions/freebase/src/com/google/refine/freebase/util/FreebaseUtils.java
@@ -71,7 +71,7 @@ public class FreebaseUtils {
 
     static final Logger logger = LoggerFactory.getLogger("freebase");
     
-    static final public String FREEBASE_HOST = "www.freebase.com";
+    static final public String FREEBASE_HOST = "freebase.com";
     
     static final private String FREEQ_URL = "http://data.labs.freebase.com/freeq/refine";
     
@@ -81,15 +81,15 @@ public class FreebaseUtils {
     static final private int JUDGES = 4;
     
     private static String getUserInfoURL(String host) {
-        return "http://" + host + "/api/service/user_info";
+        return "http://api." + host + "/api/service/user_info";
     }
 
     private static String getMQLWriteURL(String host) {
-        return "http://" + host + "/api/service/mqlwrite";
+        return "http://api." + host + "/api/service/mqlwrite";
     }
 
     private static String getMQLReadURL(String host) {
-        return "http://" + host + "/api/service/mqlread";
+        return "http://api." + host + "/api/service/mqlread";
     }
     
     private static String getUserAgent() {
diff --git a/main/src/com/google/refine/oauth/AuthorizationHeaderSigningStrategy.java b/main/src/com/google/refine/oauth/AuthorizationHeaderSigningStrategy.java
new file mode 100644
index 000000000..402a45a30
--- /dev/null
+++ b/main/src/com/google/refine/oauth/AuthorizationHeaderSigningStrategy.java
@@ -0,0 +1,50 @@
+package com.google.refine.oauth;
+
+import java.util.Iterator;
+
+import oauth.signpost.OAuth;
+import oauth.signpost.http.HttpParameters;
+import oauth.signpost.http.HttpRequest;
+import oauth.signpost.signature.SigningStrategy;
+
+public class AuthorizationHeaderSigningStrategy implements SigningStrategy {
+
+    private static final long serialVersionUID = 1L;
+
+    private final String realm;
+    
+    public AuthorizationHeaderSigningStrategy(String realm) {
+        this.realm = realm;
+    }
+    
+    public String writeSignature(String signature, HttpRequest request, HttpParameters requestParameters) {
+        
+        StringBuilder sb = new StringBuilder();
+
+        sb.append("OAuth ");
+
+        if (realm != null) {
+            sb.append("realm=\"" + realm + "\", ");
+        }
+
+        // add all (x_)oauth parameters
+        HttpParameters oauthParams = requestParameters.getOAuthParameters();
+        oauthParams.put(OAuth.OAUTH_SIGNATURE, signature, true);
+
+        Iterator<String> iter = oauthParams.keySet().iterator();
+        while (iter.hasNext()) {
+            String key = iter.next();
+            sb.append(oauthParams.getAsHeaderElement(key));
+            if (iter.hasNext()) {
+                sb.append(", ");
+            }
+        }
+
+        String header = sb.toString();
+        OAuth.debugOut("Auth Header", header);
+        request.setHeader(OAuth.HTTP_AUTHORIZATION_HEADER, header);
+
+        return header;
+    }
+
+}
diff --git a/main/src/com/google/refine/oauth/OAuthUtilities.java b/main/src/com/google/refine/oauth/OAuthUtilities.java
index 7ae64558c..3e6ff4e65 100644
--- a/main/src/com/google/refine/oauth/OAuthUtilities.java
+++ b/main/src/com/google/refine/oauth/OAuthUtilities.java
@@ -41,7 +41,6 @@ import javax.servlet.http.HttpServletRequest;
 import oauth.signpost.OAuthConsumer;
 import oauth.signpost.OAuthProvider;
 import oauth.signpost.commonshttp.CommonsHttpOAuthProvider;
-import oauth.signpost.http.HttpParameters;
 
 public class OAuthUtilities {
     
@@ -77,9 +76,7 @@ public class OAuthUtilities {
             throw new RuntimeException("Can't find secrets for provider '" + provider.getHost() + "'");
         }
         OAuthConsumer oauthConsumer = provider.createConsumer(consumer_info[0],consumer_info[1]);
-        HttpParameters params = new HttpParameters();
-        params.put("realm", provider.getHost());
-        oauthConsumer.setAdditionalParameters(params);
+        oauthConsumer.setSigningStrategy(new AuthorizationHeaderSigningStrategy(provider.getRealm()));
         return oauthConsumer;
     }
 
diff --git a/main/src/com/google/refine/oauth/Provider.java b/main/src/com/google/refine/oauth/Provider.java
index 1345a6363..fd97f0622 100644
--- a/main/src/com/google/refine/oauth/Provider.java
+++ b/main/src/com/google/refine/oauth/Provider.java
@@ -36,7 +36,6 @@ package com.google.refine.oauth;
 import oauth.signpost.OAuthConsumer;
 import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;
 
-
 public abstract class Provider {
 
     protected String host;
@@ -51,6 +50,10 @@ public abstract class Provider {
     public String getHost() {
         return host;
     }
+
+    public String getRealm() {
+        return "http://" + host + "/";
+    }
     
     abstract public String getRequestTokenServiceURL();
     abstract public String getAccessTokenServiceURL();