Grungy text tutorial
1) From google, take a picture of city night lights, something like this

2) Make a new document in photoshop with a white background. Write out your text
3) Take the ciy lights image and open it with photoshop. Go to image-adjustments-threshold and press ok
4) Now with the marquee tool, select a part of the image which has maximum lights. Copy it and paste it on a new layer on the document with the text
5) Now, select the new layer by ctrl clicking on it. With the layer stlll in selection press on the text layer
6) Press shift+ctrl+i to invert the selection. Now press delete.
