Syncs happen to me many times... I'm not sure they "mean" something. Maybe that you're conscious about Law of Attraction and that's why happen to you. But I know people but never heard of thought about of Law of Attraction and lived great synchs.
Well, Carl Jung, I think he never spoke about LoA while defining synchs. It's all about the collective unconscious for him. That's quite the same thing of LoA. It maybe about being well connected to everyone or so.