It's a bit of fun and can make a photo that looked kind of ordinary look more interesting. Let me know if you try it, I'd love to see the results! Even if it's just here.
I've seen the technique used on instagram a bit, I can never tell whether it's because of my video but some people have tagged me. One thing I would suggest though is keeping the centre of the radial blur on or just under the horizon. It looks weird if it's above the horizon.