I posted many tricks on sending sms by hiding your number, some are still working and some are stopped working. Today i found another trick on the web where you send hide your number and keep any number you wish Eg: you can send sms with number 9999999999.
Isn't it amazing,

With this service you can

1. find out if your friend is a real friend
2. give warnings to people
3. inform the police about illegal activities
4. inform the tax office about tax cheaters
5. confess your love to somebody
6. Take revenge on ex girls firends
7. play an prank with your friends and many more...

Procedure:
Step1: Go to SMSian
Step2: Register in that website and get credits.

Step3: Goto Spoof SMS and in To field fill the sender number and in From field fill the receiver number and fill up the message you want to send to your friend or enemy in Message field and click send.

Step4: Thats it finish!!
Note - To earn free credits complete the surveys and you can also refer your friends.