How do I get this grainy scanned text effect?

[rich2005]

You can get close using:

(1) Put the text on a white background.
(2) Apply Filters -> Noise -> RGB Noise. Play with the sliders to suit.
(3) The blur might be intended or accidental. For a small blur use Filters -> Blur -> Gaussian Blur and enter a 0.5 value manually.