Yes.
There are many servers available online and sometimes are full and even offline. You have to find right one for you. Go ahead and Google for Minecraft Servers and you get list of bunch of them. If you have the original version of minecraft.
You need to have java 6 or later installed on your mac for a minecraft server jar to open correctly. If this doesn't work you can use a terminal command to run the jar.
The server software is provided free of charge, to solve server out of date problem you just need to download the new vanilla (default, official) (I'm assuming that you use this server software because you are asking about this) server software that will be uploaded some time after the update, your IP can remain the same. The Link is located in Related Links You then replace the Minecraft-server.jar in your server's folder with the one included in the download. For more information see the Minecraft forums
THG.zapto.org At the moment it's under maintenance, but it should be up later today.
No, you can't open the chat box, so you can't talk on single player. Edit: You can open the chatbox and use commands in the later versions of minecraft, if you select cheats enabled when creating a new world.
firstly find the IP for a server you'd like to join. secondly load up minecraft and click on the multiplayer menu. either go into direct connect or add server, for direct connect simply enter the IP of the server into the prompted box and press connect. however if you'd like to join the server again then press "add sever" name the server then enter the IP and then it will be saved for use later on.
Yes, Minecraft is being ported by a studio other than Mojang and will be on XBLA later this year.
Not possible, for now. Its only Minecraft 1.3.1 now, I bet Minecraft 3 will be released around 20 years later.
Yes.
Identify the form of attack where a valid transmission is recorded to later be used to fraudulently authenticate to a server.
according to minecraft wiki yes but much later after the games release on xbox
it has not come out yet but hopefully it will in the next week or later