This bug still works, without explaining how I can tell you that you'll also find some with the text being white too, not yellow.
I find as many of these as I do the sand turned into pillows at idocs, so prob the same "value" which is minimal.
The method is bannable in general though I don't remember this item discussed specifically. I toss these (and sand pillows) when I find them which is usually in what looks like a dupers former house.