Starting from Tuesday, Istanbul, as well as being Turkey's largest city, will also have its own online presence as well.Millions of people will be able to buy a new website domain name extension ".ist" or ".istanbul."The Istanbul Metropolitan Municipality said the web address suffixes could now be bought online on a first come, first served basis.Up to now, there was a pre-request period that companies or people had to endure plus a sale by auction if more than one person wanted the same domain name.