Aren't cable ratings based on your household availability? So, in 2002, if they had a 0.6, it was based on 6/10ths of 1% of the households that could GSN in 2002, and that the 0.3 is based on 3/10ths of 1% of the households that can get GSN now. The amount of household viewing is pretty much the same, but the rules make it worse. Not that it is terribly acceptable, they're in MSNBC territory, but at least they're doing it a lot cheaper.
What amazes me is when you get down to the microrating level of the lesser cable networks, the number is pretty useless anyway. If the Nielsen rating pool is still around 5,000 households, about half of those can get GSN, leaving about 2,500. 0.003 of 2,500 can be 8 viewers, and 0.004 of 2,500 can be 9 viewers. Once I heard a story about the Westerns Channel in Canada (where you can get some digital offerings a la carte). Their rating was entirely based on whether an older couple in Calgary was watching or not.
--Mike