how are website useful to people around the world
What the most useful machine is, is a matter of opinion. Some would argue that the wheel is the most useful machine, and others would argue that the lever is the most useful.
water
The most useful object in the world is a screw. not kidding
Youtube is the most used website in the world
spitfire
HTML i suppose
According to Alexa.com, the world's most visited website is Google.com.
The most useful service of this website is its registration of domain names. A person or company can choose a name and register it with the company to ensure no other user chooses the same.
go on ask cheats
One of the most useful I have found is...: AnimeFreak.Tv . ^^
google.com