I have been stalked on twitter but most people aren't.
190,000,000 people follow Twitter.
There aren't any statistics to show exactly how many people of a country use Twitter.
4
As of March 17,2011 8,202,406 people are following him on twitter
This is unknown, try asking the Twitter Developers! :)
As many as you want.
Twitter reached 200 million members in March 2011.
Many famous people use Twitter. Lil Wayne's Twitter account is @liltunechi
New York State has the most Twitters users in the USA, according to Twitter data. So how many people in NYS are registered Twitter users?
On twitter they have about 500,000 followers but considering how many people are not on twitter and how many people are real fans, I would say about 450,000. Just guessing :)
500 million