See that little photo in the tab on your browser, and in the URL line?
That little photo is called a favicon.
And google has now made it easy to add one to your blog.
If you host your blog through google - you can easily add one for your blog too.
Click on the "design" tab where you add and arrange elements for the blog.
There is a little tab that says: favicon right on the top.
Click on the edit link and upload the image you want to use for your favicon.
It gets added instantly.
It's a neat way to add a personal touch.