Index: settings.py
===================================================================
--- settings.py	(revision 117)
+++ settings.py	(working copy)
@@ -372,8 +372,8 @@

 # Things to measure to taste
 MAX_COMMENT_LENGTH = 2000
+MAX_POST_LENGTH = 140

 # Gdata Stuff
 GDATA_CONSUMER_KEY = ''
 GDATA_CONSUMER_SECRET = ''
Index: js/core.js
===================================================================
--- js/core.js	(revision 117)
+++ js/core.js	(working copy)
@@ -86,7 +86,7 @@
   count: function () {
     var value = counter.el.value;
     var count = value.length;
-    chars_left = 140 - count;
+    chars_left = maxpostlength - count;
     if (chars_left >= 0) {
       if ($(counter.target.parentNode).is('.overlimit')) {
         $(counter.target.parentNode).removeClass("overlimit");
@@ -113,7 +113,7 @@
         str = "1 character over limit";
       }
     }
-    var ok = (count > 0 && count < 141) && (value.replace(counter.re,"") != counter.el._value);
+    var ok = (count > 0 && count <= maxpostlength) && (value.replace(counter.re,"") != counter.el._value);
     counter.button.disabled = !ok;
     counter.target.nodeValue = str;
   }
Index: common/api.py
===================================================================
--- common/api.py	(revision 117)
+++ common/api.py	(working copy)
@@ -70,7 +70,7 @@
 # Max length of a message. Conciseness is a virtue.
 # UIs should prevent posting longer messages. API will truncate
 # posts longer than this.
-MAX_POST_LENGTH = 140
+MAX_POST_LENGTH = settings.MAX_POST_LENGTH

 # How many contacts we are willing to count to update an actor's
 # contact_count or follower_count properties
Index: common/templates/message_form.html
===================================================================
--- common/templates/message_form.html	(revision 117)
+++ common/templates/message_form.html	(working copy)
@@ -27,7 +27,10 @@
       {% endifequal %}
     </p>
     {% if not request.mobile %}
-      <p id="counter">140 characters left</p>
+      <script type="text/javascript">
+        var maxpostlength = {{ MAX_POST_LENGTH }};
+      </script>
+      <p id="counter">{{ MAX_POST_LENGTH }} characters left</p>
       <p id="icons">
         <label for="icon" id="icon-label">Icon</label>
         <select name="icon" id="icon">