Twitter IP Writer
The IP Writer is a small PHP script that reads the IP address of the website user and sends it as tweet to the certain Twitter account. All that happens completely automatic and the visitor doesn't recognize it.

You can download the script and use it on your own website and with your own Twitter account or the original IP Writer Twitter account.

Just unzip the ipwriter.zip, no need to edit something, and put *.php files on your server. Include the ipwriter.php to your index.php by the following code:

<?php include_once('ipwriter.php'); ?>

The IP Writer looks like this:
DOWNLOAD ZIP
Includes Abraham Williams PHP OAuth library.
Kim Asendorf 2009-2011