diff --git a/robohash/robohash.py b/robohash/robohash.py
index e0e2ae4..d31ade7 100644
--- a/robohash/robohash.py
+++ b/robohash/robohash.py
@@ -16,6 +16,9 @@ class Robohash(object):
         Takes in the string to make a Robohash out of.
         """
 
+        # Default to png
+        self.format = 'png'
+
         # Optionally remove an images extension before hashing.
         if ignoreext is True:
             string = self._remove_exts(string)
@@ -41,7 +44,6 @@ class Robohash(object):
 
         # Get the colors in set1
         self.colors = self._listdirs(self.resourcedir + 'sets/set1')
-        self.format = 'png'
 
     def _remove_exts(self,string):
         """
@@ -93,7 +95,7 @@ class Robohash(object):
         directories = []
         for root, dirs, files in natsort.natsorted(os.walk(path, topdown=False)):
             for name in dirs:
-                if name[:1] is not '.':
+                if name[:1] != '.':
                     directories.append(os.path.join(root, name))
                     directories = natsort.natsorted(directories)
 
@@ -117,7 +119,6 @@ class Robohash(object):
         Build our Robot!
         Returns the robot image itself.
         """
-
         # Allow users to manually specify a robot 'set' that they like.
         # Ensure that this is one of the allowed choices, or allow all
         # If they don't set one, take the first entry from sets above.
diff --git a/robohash/static/robots.txt b/robohash/static/robots.txt
index c2a49f4..2498203 100644
--- a/robohash/static/robots.txt
+++ b/robohash/static/robots.txt
@@ -1,2 +1,11 @@
+User-agent: SpiritRover
+Allow: Finally-coming-home
+
+User-agent: T-1000
+Allow: Liquid-metal-form
+
+User-agent: WALL-E
+Allow: Rebuilding-with-EVE
+
 User-agent: *
 Allow: /
diff --git a/robohash/templates/root.html b/robohash/templates/root.html
index 49b3bcf..19e76ac 100644
--- a/robohash/templates/root.html
+++ b/robohash/templates/root.html
@@ -27,7 +27,6 @@ robo@robohash.org
 
 <script src="//robohash.org/static/js/jquery-1.3.2.min.js" type="text/javascript"></script>
 <script src="//robohash.org/static/js/jquery.prettyPhoto.js" type="text/javascript" charset="utf-8"></script>
-<script src="//robohash.org/static/js/twitter.js" type="text/javascript" charset="utf-8"></script>
 <script src="//robohash.org/static/js/tipsy.js" type="text/javascript" charset="utf-8"></script>
 
 
@@ -430,7 +429,7 @@ function submitform()
 
   			<span class="benefit_header">Styles of Robot</span>
   			<p>Want a JPG instead? Fine. PNG? Fine. Want it as a bitmap? I think you're nutty. But fine. Just change the
-            URL to request in any format you want. Use ?ignoreext=false to make the bots care about extensions.</p>
+            URL to request in any format you want. If you want it to hash the whole thing, including the extension use ?ignoreext=false to ignore the extensions.</p>
 
         </div><!-- end of benefit right -->
 
@@ -606,10 +605,6 @@ Robohash.org" or something.
 <!-- start of footer right -->
 <div id="footer_right">
 
-<span class="follow"><a href="http://www.twitter.com/robohash" class="fade" title="Clicking on this will replace your cat with a robot.">Follow Us</a></span>
-
-<div class="tweet"></div>
-
 </div><!-- end of footer right -->
 
 </div><!-- end of footer container -->
diff --git a/robohash/webfront.py b/robohash/webfront.py
index b4196f5..cc26ee7 100755
--- a/robohash/webfront.py
+++ b/robohash/webfront.py
@@ -280,9 +280,7 @@ class ImgHandler(tornado.web.RequestHandler):
 
         # Detect if the user has passed in a flag to ignore extensions.
         # Pass this along to to Robohash obj later on.
-
-        ignoreext = args.get('ignoreext','false').lower() == 'true'
-
+        ignoreext = args.get('ignoreext','true').lower() == 'true'
         # Split the size variable in to sizex and sizey
         if "size" in args:
                 sizex,sizey = args.get('size').split("x")
@@ -317,8 +315,7 @@ class ImgHandler(tornado.web.RequestHandler):
                 args['avatar'] = False
 
         # Create our Robohashing object
-        r = Robohash(string)
-
+        r = Robohash(string=string,ignoreext=ignoreext)
 
         # Allow users to manually specify a robot 'set' that they like.
         # Ensure that this is one of the allowed choices, or allow all
@@ -364,11 +361,11 @@ class ImgHandler(tornado.web.RequestHandler):
             bgset = args.get('bgset')
 
         # We're going to be returning the image directly, so tell the browser to expect a binary.
-        self.set_header("Content-Type", "image/" + format)
+        self.set_header("Content-Type", "image/" + r.format)
         self.set_header("Cache-Control", "public,max-age=31536000")
 
         # Build our Robot.
-        r.assemble(roboset=roboset,format=format,bgset=bgset,color=color,sizex=sizex,sizey=sizey)
+        r.assemble(roboset=roboset,format=r.format,bgset=bgset,color=color,sizex=sizex,sizey=sizey)
 
         # Print the Robot to the handler, as a file-like obj
         if r.format != 'datauri':