Criteria for successful replicator:
She also explains the symbiotic relationship between genes and memes.
The reason for the success of memes is the evolution pressures caused by human evolution (Pages 76-78):
Blackmore argues that memes have turbo charged our genes and have accelerated our evolution and in some cases even replaced genes in determining our basic bahavoir.
Make sure you read Dawkins first as Blackmore bases some of her arguments on material explained by him.
Diamond has written some other interesting books including 'Why is Sex Fun'