You can find all the dates related to the history of a question and its answers by clicking the History of Changes link on the left side when you are logged in. We've experimented with listing the dates prominently, but currently we decided it clutters things up too much. There's already a lot of information and options on our pages so we're striving to keep things simple. If you want to answer only recent questions, use the "Most Recent Questions" link in the related links section.
If you are a registered member, you can always see data relating to the time-frame of questions and answers - in the question history (the link is on the left of each screen). The question history - lists when the question was asked, if it was merged with another question - and when it was answered. The publication dates are not available to non-registered users.
WikiAnswers questions do have dates. The exact time that a question was submitted (and any other action taken, such as an answer or edit) is listed on the question's "History of Changes" page. See the blue tab at left. We don't make a big deal out of the dates because we think questions are timeless. Although the person who originally asked a question wants an answer ASAP, WikiAnswers is about growing questions and answers into permanent resources that will help thousands of people in the future.
SGNL by Sony - 2010 Your CES 2014 Questions Answered was released on: USA: January 2014
SGNL by Sony - 2010 Your 4K TV Questions Answered was released on: USA: 2 July 2013
Killing JFK 50 Questions Answered - 2013 TV was released on: USA: 5 November 2013
Dr- Phil - 2002 Your Etiquette Questions Answered 1-100 was released on: USA: 31 January 2003
Dr- Phil - 2002 Your Etiquette Questions Answered 1-226 was released on: USA: 25 July 2003
The Doctors - 2008 Celebrity Health Questions Answered 5-78 was released on: USA: 10 January 2013
All About Us - 2001 No Questions Asked 1-5 was released on: USA: 1 September 2001
Joey TV - 2007 iJoey Twitter Questions Answered 7-33 was released on: USA: 15 October 2013
No Questions Asked - 1951 was released on: USA: 15 June 1951 France: 21 March 1952 Sweden: 24 March 1952 Philippines: 14 October 1952 (Davao)
The Dr- Oz Show - 2009 Are You Normal or Nuts Your Weird Questions Answered 4-33 was released on: USA: 24 October 2012