First Commit!

This should work out nicely

Source/content_script.js

@@ -30,11 +30,12 @@ function walk(node)
 function handleText(textNode) 
 {
 	var v = textNode.nodeValue;
-
-	v = v.replace(/\bThe Cloud\b/g, "My Butt");
-	v = v.replace(/\bThe cloud\b/g, "My butt");
-	v = v.replace(/\bthe Cloud\b/g, "my Butt");
-	v = v.replace(/\bthe cloud\b/g, "my butt");
+	
+  // Deal with the easy case
+  v = v.replace(/\b(W|w)alk/g, function(match, p1, p2, offset, string) {
+    w = String.fromCharCode(p1.charCodeAt(0));
+    return w + "ank";
+  });
 	
 	textNode.nodeValue = v;
 }

Source/manifest.json

@@ -1,8 +1,8 @@
 {
 	"manifest_version": 2,
-	"name": "Cloud To Butt",
+	"name": "Walk To Wank",
 	"version": "1.0",
-	"description": "Replaces the text 'the cloud' with 'my butt'.",
+	"description": "Replaces the text 'walk' with 'wank'.",
 	"content_scripts": 
 	[
 		{