SeeMS allows you to write sms and at the same time to see what happens before you using the camera. In this way you can avoid obstacles, continue to watch TV or what is happening on your computer screen while writing an sms.
Seems also provides you with everything you're used to when you write a message: searching for contacts in the phonebook, the multiple sending of the message to more people, automatic correction of text and suggestions as you type a word to speed up the writing of the message.
Here are some reviews about SeeMS:
Rai - neapolis