At first I was thinking with this video, what a cool way to get your message around at a trade show. Then I was thinking about the flies. Sure, it’s just a fly, I’d squish one with a fly swatter no problem. But being tied to an anchor the rest of your measly little fly life would kind of suck. Fortunately one of the comments on YouTube translated the copy at the end of the video, which basically says the tags were stuck to the flies with wax, which melted a little while after they were stuck on to the flies. So all is well and good in the world of the German fly. A few hours of unpaid servitude, and then back to there measly little fly lives.