Questions aren't track by popularity per day, so it is impossible to say what the most popular question of the day is.
The most popular question on WikiAnswers is How many grams of carbs are recommended per day? with a popularity of 1,529 as of February 13, 2011. See the question in the "Related Questions" section below.
The second most popular question on WikiAnswers at the moment is "How many grams of carbs are recommended per day?" with a popularity of 1,559 as of January 17, 2012. See the question in the "Related Questions" section below.
Naruto is currently the most popular anime archive, with 284,821 stories. I do not believe, for the second question, the public has access to this, but anybody who knows this, please improve this question.
It certainly is a very popular type of question, if not the most popular. They are from a game called Scattergories.
The most popular question about skin cells is "What are skin cells?"
I think a popular question, really, is like "how are you" or "are you ok?"
my guess is "What is the most unanswerable question?"
The most popular day for weddings is of course on February 14th. This being the love day, or Valentines day.
the most popular one is what is a fairy wand
What is the history of breakdancing? is the most popular question in "Break Dancing," with a popularity of 55.
The most popular day to have a baby would be October 5, August 4, or August 16
How do you robot dance? is the second most popular question in "Break Dancing," with a popularity of 21 points.