The transactors have to pay very small almost a hidden fee. This money piles up and the more transactions by the more people, the more money the company makes. Every moment hundred of people send money via Paypal, thus Paypal is a very rich company.
It is much easier to pay bills online than with written checks. The payments are usually applied much faster, and you save yourself the cost of a stamp.
They need your full name, address, policy number, phone number, and other basic information. They also need your credit card number too. Hope that helps.
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Most payments online are made with credit or debit cards. You can also use Paypal to send or transfer money. If dealing with larger amounts of money internationally, then...
when you buy items from QVC, HSN or SHOPNBC.com, they offer 3-5 payments on stuff like that. it makes it easier to buy, than having to do it all up front.