You are allowed to have 50 characters per account, and ten per server. Blizzard is working to possibly increase the amount of characters per server in the upcoming expansion "Mists of Pandaria".
The Blizzard Entertainment research and development group comprises more than 250 designers, producers, programmers, artists, and sound engineers. Each member of the Blizzard Entertainment staff is a true game enthusiast, giving the company invaluable insight into creating products for gamers. Blizzard is the designer of World of Warcraft.
Although current figures are a little hard to guesstimate (being at the end of an expansion and getting ready for another one), In Wrath of the Lich King, there were approximately 5.5 million lines of code in the game, not including database entries and what not.
Jobs change over time to meet the needs of a changing world. Our modern technological world has created many jobs not found in 1900. Video game designers, web designers, and computer programmers, were not around in the 1900s.
In the whole world there is 0.5 designers.
Currently in Mists of Pandaria, the latest expansion to World of Warcraft, there are 90 levels.
There are roughly 9-10 million active subscriptions for World of Warcraft.
Millions
Assuming every single subscriber in World Of Warcraft plays which is ten million subscribers, then it is assumed that there are ten million people playing world of Warcraft.
It is estimated that around 9500 people join World of Warcraft every day.
too many...
There are many forums available on the official World of Warcraft website. WoW also has many "fansites" that can be found on the official website: http://www.worldofwarcraft.com Here is another website: http://www.fanaticsofwow.webs.com
World of Warcraft had approximatly 9.3 million subscribers by the end of 2007. In January (2007) they had about 8 million.
In the past couple of years, there has been about 800,000 subscriptions canceled. This leaves World of Warcraft with about 10.2 million subscribers.
Currently, as of August, 2012, there are 10.2 million active subscribers to World of Warcraft.