The IP is what "thepiratebay.se" resolves to. I assume the submitter used the IP address in order to get around DNS-level censorship.

There is a skull and cross-bones on the flag. I thought they used a cassette tape and cross-bones?

In your console, enter:

$ traceroute thepiratebay.se

Wait until it's done, then compare the last IP with one given here.

It's a trap!