Well, everyone's basically said everything you need to know about this effect, but I'll still give it a shot.
It is, of course, a modern take on the moving hole plot, in which you take a badge or pin on your shirt and move it wherever you want simply by sliding, it's that awesome.
The method: Yeah, it gets the job done. It does need a gimmick which may not be too easy to acquire, but if you're a magician you should probably have one anyway. But the method is very ingenious, and I would not have thought of it. But remember: Means > Method
So there's a heap of pros, such as it's an awesome effect, and it has such a simple method.
But it also does have some cons, such as there could be some pictures explaining it better, and the gimmick could show a little, depending on the size of it. And that wouldn't be too good
But all round, a great effect. I'm enjoying it
It is, of course, a modern take on the moving hole plot, in which you take a badge or pin on your shirt and move it wherever you want simply by sliding, it's that awesome.
The method: Yeah, it gets the job done. It does need a gimmick which may not be too easy to acquire, but if you're a magician you should probably have one anyway. But the method is very ingenious, and I would not have thought of it. But remember: Means > Method
So there's a heap of pros, such as it's an awesome effect, and it has such a simple method.
But it also does have some cons, such as there could be some pictures explaining it better, and the gimmick could show a little, depending on the size of it. And that wouldn't be too good

But all round, a great effect. I'm enjoying it
