Adding photos to your website can really boost traffic but you have to be careful about infringing copyrights. You can find tons of images online on just about every subject using Google Images - but - you could run into trouble if you use those pictures without permission. You could make your own images from existing pics you find on Google Images using free tools such as The Gimp but this is time consuming and requires some graphic skills.

A solution is to use public domain pictures and photos. There are many sites which offer free images, for example, EveryStockPhoto.com but the better images require a paid subscription. One good source of public domain images is commons.wikimedia.org although the selection is somewhat limited in some sections.

An alternative is to buy a package of guaranteed public domain images such as the 4000+ Public Domain Images package from thecybercircle.com. The collection isn't free, but it's cheap at less than twenty bucks for over 4000 pics. You can even resell these images online to make more money!