The invisible and the nonexistent look very much alike.
With this site barely born, I really appreciate the acknowledgement on Scientificblogging.com's Darwin Day 2008 page:
When biologists talk about the nuances and complexities of evolution, it's easy to get lost. Defaithed tackles the issue for Darwin Day by writing Darwin Day fun: A layman explains evolution by natural selection ... Don't let their modesty fool you. They condense a lot of complexity into 5 easy-to-understand bullet points and then flesh them out nicely.
It's an honor to be mentioned, and to be a part of celebrating one of humanity's greatest intellectual accomplishments.