Blogger supplies every blog with the standard orange "B" blogger favicon. Having your own unique favicon is a great way to give your blogger template both a distinct and explicit brand. These small 16X16 pixel images will most definitely help your blog stand out from the rest of the blogspot blogs.What is a Favicon?
A favicon is a small 16X16 image located at the top of your browser in the url bar.
How to Change your Favicon