Most Unique feature freesms8 provides is "Dynamic Sender ID". You can send your name as your sender ID instead of your Mobile Number.

All Free SMS websites will provide the user mobile number as the Sender ID. This Dynamic sender Id feature is available in Freesms8 only.

And you can change your Sender ID at any time. You can use either your mobile number or your name as sender ID at a time , and you can also change the Sender ID to your number or name.