As a merchant or a developer, you always need to use the icon on your e commerce site. For example : If you use Magic Menu - an awesome Prestashop Mega Menu module - you can use these icons as your Menu Icons on your Store.
Prestashop 1.6 uses Bootstrap as its CSS framework, that means you don't have to find a list of icons by your self.
Now you can use this list on your store, for free :
I have also released a new SOO Magic Menu module feature : 235 Premium built-in Icons, special for Fashion, Electric, Food, Pet or Bike Stores to extend your Prestashop - better Prestashop default icons several times. When you active this feature, you could use this premium icons as a part of Prestashop Store.
Prestashop modules we created first to solve the problem of our own business - an eCommerce site. That means they are very useful for a serious business. If you value your web property, these modules are a wise investment.