It will run better and with higher fidelity if it is digital. But it can run over analog information. Language is an analog medium, not a digital one, but Blackmore sees the emergence of language as a prime candidate for memetic evolution. She cites research to show that after 40 years of mass television, the differing regional vocabularies of Britain are more divergent than before. Something is clearly combating the homogenizing effect of TV, and she believes it is the force of memetic evolution.
Language allows for more accurate copying of thought as it grows more precise.
The Internet is the most recent expansion of this force. Memetics says that actually it is all in the interests of the memes. We would expect that to happen because it is in the interests of memetic ambition, and it is completely irrelevant to our happiness. All we're doing is acting as a selection environment. But memes may not need us to survive, any more than our genes any longer need the bacteria in which their ancestors originated.