-$title = stripslashes($_POST['title']);
-$excerpt = stripslashes($_POST['excerpt']);
-$blog_name = stripslashes($_POST['blog_name']);
+$title = isset($_POST['title']) ? stripslashes($_POST['title']) : '';
+$excerpt = isset($_POST['excerpt']) ? stripslashes($_POST['excerpt']) : '';
+$blog_name = isset($_POST['blog_name']) ? stripslashes($_POST['blog_name']) : '';