Twitter is an awesome tool for marketing,you make friends and try to promote your product by doing tweets,the main agenda behind tweet is to target a particular audience who need your product,but suppose you want to target a US people for your product but you don’t know how much exactly your total friends belong to US,
so how can you know about the location of your friends.
There is a simple method by which you can see the location of your twitter friend and also see the live tweet by him. Just try Mytweetmap .
This is just awesome, image is explaining all the things and for the original feel just visit the site and login with your twitter ID.