do you tell me in detail what is google analytics,or it is plug in,or it is sites,please tell me ,

Google analytics is the best traffic analyzing tool I have ever used. Its new advance segmentation is now make you able to search or see views according to your needs. You can specify traffic sources, keyword, region or ant thing you want. Can see 4 view option same time in comparison fashion.

yes this is another free feature from google and u can get all traffic from which ip,browser,country etc.