Yeah, I discussed that some in the original post. The challenge there is then you REALLY have to keep up with things to make sure your filter is getting all the phones, and you have to keep up with all the new ones coming out, which was just way more work than I’d want to do. My example helps out a little there, by making assumptions about mobile devices. But, that carries it’s own risks. You just have to balance your needs with what produces the most relevant reports for your needs.