I have seen this and I believe it is useful to capture others attention. I place the code & #17 58; (without the space in between) onto the source code for the title and my title will look like the picture below. And you will see this ۞ right at the top left of your topic.
When you search for Malaysia Classifieds in google, you will see the following.
Notice that even though it is 5th, the link for my homepage is a little standing out. Therefore, I predict that it will bring more people into my page.
I don’t know how it will do, but will update when I have any stats.