Nope :P
I believe you can, even at the same time, but if you do a message pops up saying that you're logged in from another location. You can't, however, have 2 accounts playing on the one server.
The only way to have to RuneScape accounts without making a new e-mail is to already have two accounts and then register only ONE of them. You cannot have two accounts now unless you have multiple e-mail addresses also. If you have multiple e-mails, then you can just make two or more accounts and register each with a different e-mail. However, if Jagex finds out, then the accounts known may be banned forever.
no if online yes if offline
You can, but they can't be on the same server. The first person that got on the server will be kicked, the second person will instead be on.
Nope :P
you can't
yes
louie_jay2000@yahoo.com
I have done it you just put in the same email address and then do whatever you want after that
No, it will require a different email address than your 1st one.
You are only allowed one account, as per Facebook rules. If Facebook suspect that two accounts from the same IP's are the same person, they will disable both accounts.
you can create an avatar then change it but no you can not crete two accounts with the same email if it will be on xbox live
No
You can have two accounts as long as you use two different email addresses.
No two people can have the same gmail address. If there are 2 accounts, there will be 2 different email ID's. The Facebook account will be different in that case too.
no not at all. you can make atleast 3 to 6 accounts on one email. but you CANNOT use the same name you could use Shinobilegendscom1 i hope it helped. twister1998