Yes it is true but the page you used has expired.
Enter this site from now on
http://forums.naturalparenting.com.au/archive/index.php/t-4285.html
BUT WAIT !!
I have one that is better and on sale at Ebay.
Go to
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&rd=1&item=5572785354
PLEASE IF ANYONE WANTS IT PLEASE BUY IT!!!