I know we like messing with Internet polls… but real ones, too? Or is there an explanation for this?
The Pew Research Center reports on what percentage of adherents to various religious faiths pray daily:

Unaffiliated is at 22%.
Specifically, among atheists, 5% of us pray daily.
Stuart Bechman, president of Atheist Alliance International, gave a couple possible explanations:
“It’s more likely [atheists] enjoy messing with the people doing the survey,” [said Bechman.] “Maybe they are talking about grace at dinner with a religious family.”
Or some people are just really confused by the term atheist…
Or they’re praying to the Flying Spaghetti Monster…