Image can also give a lots of traffic to your websites.
Suppose your keywords are “keyword1 & keyword2″.
Create an image with the file name of keyword1-keyword2.jpg
and use alt text on the image with keyword1 & keyword2.
Create a web page called keyword1-keyword2.html and link the keyword1-keyword2.jpg image to this page. That should rank fairly high up in the google image search for the keyword phrase.
In most niches image search traffic is quite useless. There are a few niches that strive on image search traffic…celebrities, fashion, wallpapers, porn, art, etc.