Don't mean to be an old poop, but I often cringe when I see those tiny flashers. If you going to ride it make damn sure they can be seen. I use arm signals too and always check behind that anyone there is aware of my plan. Being safe is cool too.
I was following a buddy this summer on a Gixxer1000 with some kind of tail light with a dinky signal included. I told him I found the thing hard to distinquish. At one point a 4 wheeler got between us and damn near drove over him when he stopped at an intersection to turn. He wasn't hit but the message was driven home although he didn't change the light.