Do you own a Samsung i780 or a Palm Treo 700 series or PRO? Well then, you are going to love this small application:
Null Keyboard avoids that keyboard from popping up whenever you position the cursor on a text field.
Since the devices have a smaller screen, the keyboard occupies more than 50% of the screen when open.
So this way you can avoid this unwanted behavior.
Grab it here, its free.