Navigation Icons have become a very popular and very useful trend of web design... especially with the advent of Web 2.0
The reason for this, I believe, comes from desktop design, and human/user lazyness.
A user finds it much easier to make sense of a button if it has some visual aid,
Look up at your browsers toolbar... chances are, your back button is accompanied by, or perhaps even replaced by, an icon of an arrow pointing back. It’s super quick, and super easy to understand.
See the video tutorial on how to use this technique on the learning center page
A picture genuinely is worth a thousand words. Give your users the understanding they need to click that link, give them a little aid. Give them... Falcon Pro
I’m telling you, I could write ads for Calvin Klien