I would advise people to give this a chance.
Let me clear up some things about Mars One. It is often claimed that Mars One is a scam and has no scientists, engineers, technology, timetable, suppliers or plan. This is just not true!
Scientists and Engineers:
Lansdorp received his Master of Science in Mechanical Engineering from Twente University in 2003. For five years Lansdorp worked at Delft University of Technology and in 2008 founded Ampyx Power in order to develop a new, viable method of generating wind energy.
Lansdorp is also a successful entrepreneur. Here is a ted talk about his last company.
Arno Wielders received his Master of Science in Physics from the Free University of Amsterdam in 1997. He was soon hired by the Leiden Observatory, Leiden University, to work at Dutch Space in the Very Large Telescope Interferometer Delay Line project.
Gerard 't Hooft, Nobel laureate and Ambassador of Mars One
Gerardus (Gerard) 't Hooft is a Dutch theoretical physicist and professor at Utrecht University, the Netherlands. Received the 1999 Nobel Prize in Physics.
Norbert Kraft, Chief Medical Officer, Mars One
Norbert Kraft is an American Medical Doctor with over 17 years of experience in aviation and aerospace research and development as of 2012. His primary area of expertise is developing physiological and psychological countermeasures to combat the negative effects of long-duration spaceflight. He has worked for the Russian Space Agency, the Japanese Space Agency and NASA.
Grant Anderson, Sr. VP Operations, Chief Engineer and Co-Founder, Paragon Space Development Corporation 28 years of experience in spacecraft systems design, requirements formulation and preliminary and detail hardware design. Founded or help found 5 companies, two of which are still operating.
Time table: http://mars-one.com/en/mission...
Technology they want to use: http://en.wikipedia.org/wiki/M...
They don't plan to develop much of the technology themselves, they're planning to buy it from other companies mostly such as SpaceX. Most of this technology exists already. They have written statements of the companies that they are willing and able to supply these things.
All they need is the funding, and they plan to get that through broadcasting and sponsor deals. His argument is that the olympics got 6 billion dollars in sponsor deals, so wouldn't a colony/trip to mars get the same? It would certainly help them get funding if people didn't denounce it as soon as they hear the name. The mission is so cheap (6 billion dollars) because it's a one-way trip. Sending people from Mars back to earth is very expensive. Also, they're not a big wasteful government agency.
The falcon heavy for example costs only $77-135M to launch (2013). Technology has come a long way, this combined with the privatization of space has caused costs to drop significantly.
According to this the 2008 olympic openings ceremony was watched by 1 billion people. According to wikipedia in 1969 (the world population was only half of what it is now, and people weren't as well connected as they are now) the moon landing had 500 million people watching. So, just imagine, how many people would watch a landing on Mars in 2023.
Not saying they're actually going to be able to pull it off, but there's no evidence that their efforts aren't sincere.
Here is a press conference that answers most of the questions you may have: https://www.youtube.com/watch?...
I am aware that reddit AMA was badly received and too vague for the bold claim he was making. But he answers most of the unanswered questions in the press conference.