How do I get this grainy scanned text effect?

[Ofnuts]

If you want to distort the text a bit:

• Get a selection from the text layer
  
• Select > Grow by 1 pixel (to compensate a slight shrinkage in the text step
  
• Select > Distort with Threshold: 254 and low values elsewhere
  

   

• Add a new lawyer and bucket fill the selection
  
• Perhaps add a very light Gaussian blur (Size: 0.50 - 1.00), and play with contrast in the alpha channel