VoipBuster are allowing everyone to send 30 free text message whenever you want and it will be delivered to your friends exactly on New Years day (12 midnight).
You don't have to pay anything.
You download their program.
Then you quickly signup as a new user.
When you are logged in, you click the Sms button at the top of the page and select the "Free NewYears SMS" button, write your message and the mobile number(s) you want to send it to. Your message will then be delivered to all the mobile numbers on 01 January at 00:00
I've been using voipbuster for a while. It is like skype but cheaper and also lets you call some countries for free only if you deposit.