There is not any official validity for the New 7 wonders of the world and its a private firm doing all this and making some money from that..If a country has large population and technology they can reach the top 7. There is no scientific and educational work to finalize the wonders and there is no idea how it is counting!!
Read more at
http://meninweb.blogspot.com/2007/06/un ... o-to-new-7
The private firm involved is making lot of money from it. I also 'contributed' some with casting a vote to the new 7 wonders