List of free sms sites-send message to mobiles

Here's the list of free sms sites:

www.160by2.com
www.way2sms.com
www.indyarocks.com
www.jaxtr.com
www.gii.in
www.gizmos.com
www.atrochatro.com
www.text4free.net

newly included websites(as per the user comments):
www.youmint.com

if you know any other services just comment here