Your IP address (as the rest of the internet sees it) is
- If you're behind a firewall or NAT (connection sharing device, e.g. wireless access point), this is your NAT's IP address, the one the rest of the internet sees. When folks need to know 'what is my IP?', this is usually the information they need. Your PC's local address on your end of that shenanigans is probably in a reserved address space, e.g. 10.x.x.x or 192.168.x.x, that is only valid inside your local network.
- This is a free service; please don't abuse it.
- When telling the URL of this page to your friends, it would probably be best to write it out...