HI,
1. IP stands for Internet protocol
2. IP number is nothing but an identity of a person where is actually connected from.
3. Doing fraudulent things is an offense by a person on internet which can be identified through IP numbers and can catch him/her.
4. Try this while you are online
http://www.ip-details.com/ , on the first page you will see your IP number, your ISP provider and his address.
5. Through your ISP provider, can get your address because you they would have you id and address.