Some players decide to take on the expense of multiple accounts to try and get more out of the game. While a lot of players do this so that they can multibox, you can also get a second account for gold-making purposes. The advantages of having a second account are as follows:
Having a second account lets you trade with yourself across the neutral Auction House.
Extra character slots on the server provide for profession slots or storage.
A second account lets you add your own characters to your guild without the help of a second person.
A second account lets you use two characters at once. This allows you to remain on your banker at all times if you wish, which lets you do the following:
If you place all your accounts on the same Battle.net account...