According to Daryl Hatton, CEO of Fundrazr, most campaigns are funded by family and friends. This makes sense. However, most people do not have enough "rich uncles" to cover hefty medical expenses. Pinning your hopes on the charity of strangers is not typically a good gamble.
There is a lot to consider when choosing your donation payment processor. You will want to determine which features are "must-haves" and which are "nice-to-haves" when making this decision. Each payment processor has its pros and cons, and in the end you'll have to decide which one best meets your fundraising needs.
By registering your nonprofit with PayPal, you get to take advantage of PayPal's nonprofit transaction fees. For normal businesses, PayPal charges a 2.9% transaction fee for all transactions. However, nonprofits are only charged 2.2%. So it pays to register.