I put this in my footer.php on bbPress to make Woopra carry over IDs and avatars (via Gravatar). Seems to be working.
<!-- Woopra Code Start -->
<?php
global $user_id, $user_email, $user_identity;
$woopra_name = bb_get_current_user_info( 'login' );
$woopra_email = bb_get_current_user_info( 'email' );
if ( $woopra_name == '') {
echo "<script type=\"text/javascript\">";
echo "\n";
}
else {
echo '<script type="text/javascript">';
echo "\nvar woopra_visitor = new Array();";
echo "\nwoopra_visitor['name'] = '$woopra_name';";
echo "\nwoopra_visitor['email'] = '$woopra_email';";
echo "\nwoopra_visitor['avatar'] = 'http://www.gravatar.com/avatar/" . md5(strtolower($woopra_email)) . "&size=60&default=http%3A%2F%2Fstatic.woopra.com%2Fimages%2Favatar.png';";
echo "\n";
}
?>
var _wh = ((document.location.protocol=='https:') ? "https://sec1.woopra.com" : "http://static.woopra.com");
document.write(unescape("%3Cscript src='" + _wh + "/js/woopra.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<!-- Woopra Code End -->