You must join all of these online accounts as different areas of making money online require different accounts. Through my experience these are the number 1 accounts to join. They are all FREE, easy to setup and use and some even offer sign up bonuses, like 
Green Zap, of $50.00!
 
Once you join all the listed accounts, you'll need to get your referral codes from them and put them on your website, email and send them to EVERYONE - because every person that signs up under you, and under them and so on, these accounts will PAY YOU GOOD MONEY.

E-Gold is another account that offers some special properties. I can't go into detail about it here so I suggest you check out a learning currency exchange program and REALLY MAKE MONEY.

For more information on the specifics of the accounts, visit their web site and take a look.