[walrus]

It won't change the posts that have already been made. You'll need to delete a post and then re-run the script. It only updates the database when it finds something has changed.

You could edit wp-autoblog.php line 161

$post['post_content'] .= ' and <em>software</em> by <a href="http://elliottback.com">Elliott Back</a>';
} else {
$post['post_content'] .= 'Created using <em>software</em> by <a href="http://elliottback.com">Elliott Back</a>';

and remove the link.

I'm not a php kind of guy so I simply did this:

$post['post_content'] .= ' ';
} else {
$post['post_content'] .= ' ';