You can use randomly placed letters to create interesting dynamic art from your photos. For example a simple forest photograph...

...can be given a vignette frame of exclamation marks and question marks:

A happy face can be given a surround of letters from the word "HELLO!":

Or build a logo from a colorful alphabet...

This filter places characters symbols and letters in a chaotic way across your image, though of course you can choose to make it less random using the dialog box. A more "regular" text effect is the the Text Effect.

130 Easy Effects

Background Designer

Sepia Vignette Effect

Sepia Effect

How to create a Newsprint version of a photograph