Favicon, what is that? If you look at the top of the browser on the tab that has the title of the page you are on to the left you will see a small image. That is the favicon, which is usually an image of your logo or something that is linked to your brand. If when you look at your own site its not, then I’d suggest that you change it to something that is.
Now every theme is different, so for this I recommend that you go look at the documentation for your theme to find out how to change it. Or go check out the help forums for your site. Search on ‘how to change my favicon’ to find the instructions that match your theme.
Your homework now is to check out your favicon, and if it needs to be changed to go ahead and change it.