I signed up for the convenience despite many conflicting reports of how reliable paypal is (lots of nightmare reviews of accounts being locked for no apparent reason). Mostly what I've been able to gather, for the average individual, paypal works just fine. I've had no issue receiving my payments for months now.
Seems the people who have more issues with accounts being locked are people running businesses and swap in/out hundreds and thousands of dollars frequently. I'm guessing locking the account is paypal's way of controlling their float - but if it causes issues with disgruntled businesses - I would think that would be bad for their business. But this is just pure speculation on my part based on the reviews I've found online (always consider the source, right?).