I hear this from time to time but I have no idea of what it is.
Could someone please tell me.
I still don't get what it is or how I should use it.
It's just a nice and stylish way of showing off.
Flair exists to let everyone else know about your brilliant Stack Exchange profile. You should put it on your website, your page on the Ubuntu wiki, and your vest that you wear at work.
The URL of your flair is
0 is your user id. You can customize your piece of flair by adding
hotdog). And you can include this image anywhere you like.