50 New Free High-Quality Icon Sets
Using Icons will make things more clearer and reduces users “reading”. As icons are colorful it attracts users and within a fraction of second users will be able to understand what that particular link is talking about and this increases number of clicks by the user on our site.
Icons will help us in presenting important information in a attractive manner resulting in presentation of required information to the users reducing wastage of users time in searching for links they want ( which results in frustration ). So always use Icons only to present important information and never waste users time by using Icons for less important information.