Nether was added to the server on the 5th world. The nether is an odd place for collecting odd resources. The most useful thing here is lava. Just remember to watch out for ghasts. Also, zombie pigmen are neutral unless attacked, but they drop cooked pork. Have a good time getting glowstone!
The Nether has rarely been inhabited, and most bases in the nether were abonded due to lack of resources, and the danger of ghasts and other mobs. Several historical nether bases include that of Germany, and one Japan base.