Best way to put money online?

Now there are many online banking places. Liberty reserve, paypal, alertpay, moneybookers, and many more. What do i use? PayPal. What do i think is the best Alertpay because it is the safest way to go about it and i don't think you can get limited. Why do i use PayPal? Because i think that its system of depositing and withdrawling money has more options and is easier, also more websites support this when you buy and sell stuff.