Notice the favicon at the top left, just next to my blog url.
It's red - OM.
I guess readers know what that stands for.
[Update: Oops, I have changed my favicon to a fiery yellow, red orangey sun for a more dramatic and visual effect]
You can design your own favicon (favourite icon) and have it uploaded.
Just go to your blogger dashboard.
Here's a simple tutorial from the blogger guys themselves.
There are many websites out there you could check out to help you along.
Some people (yours truly included) couldn't see their favicon appearing after they had uploaded it. Seems like quite a common complaint.
Try clearing cache.
Or try refresh
It helped me.
Disclaimer: Ha Ha ...I'm NOT Responsible For Any Problem You May Encounter!