Finding Strongholds: Eye of Ender
Basically, in MP, it does not seem to work....
In SP, throw an eye and it slowly drifts up and away from you in the direction of the nearest stronghold. It will hover for a second, drop, and then you pick it up and throw again. More often that not you retrieve the eye.
When you throw one whilst over a strong hold it simply drops immediately to the ground.
In MP throw it and it zigzags about furiously. It is very hard to tell which direction it is going in. Somethings, if you throw multiple, they seem to go in different directions. Additionally, more often than not, the eye does NOT survive.
Even worse, first time I tried it threw ALL of the pearls that I had in the one go. For later attempts I placed a single eye at a time in my quick inventory and threw it.
So it is possible to find strongholds in MP, but it is VERY difficut and would require a very large quantity.
AdmiralTriggerH and I have so far used up 12 eyes and we have no freaking clue where the nearest strong hold is. This attempt (and the first attempt) went in very different, non-intersecting directions...
And after that you need a further 12 to start the portal to "The End" which I must admit is a very boring place. It is made entirely out of a yellow/green block and towers of obsidian. And when I spawned in Creative SP I immediately saw approximately 35 Endermen. I would suspect that in a real game you would not last very long....