Index: wp-admin/export.php
===================================================================
--- wp-admin/export.php	(revision 22345)
+++ wp-admin/export.php	(working copy)
@@ -94,6 +94,8 @@
 		$args['content'] = $_GET['content'];
 	}
 
+	$args = apply_filters( 'wp_export_args', $args );
+
 	export_wp( $args );
 	die();
 }
@@ -209,6 +211,8 @@
 <p><label><input type="radio" name="content" value="<?php echo esc_attr( $post_type->name ); ?>" /> <?php echo esc_html( $post_type->label ); ?></label></p>
 <?php endforeach; ?>
 
+<?php do_action( 'export_filters' ) ?>
+
 <?php submit_button( __('Download Export File') ); ?>
 </form>
 </div>