FDIC pass-through insurance is basically a fiction - PayPal, for all their faults, has some slick attorneys and creative marketing folks so as to make them appear to be a bank when in fact they are NOT!
An excerpt from PayPal's explaination of FDIC pass-through insurance (which again is basically a fiction)...
http://www.paypal.com/cgi-bin/webscr?cmd=xpt/UserAgreement/general/FDIC-outside
FDIC pass-through deposit insurance protects you only against the failure of the bank at which PayPal places your funds, and
does NOT protect you against PayPal's insolvency.
First, the all capitalized NOT in the above text is their emphasis ... however, I bolded some of the text to further emphasis that PayPal is NOT a bank and thus funds they hold are NOT be FDIC insured ...
And it gets even worse - the so-called FDIC pass-through insurance may not
even exist ...
Another excerpt from PayPal's FDIC pass-through insurance page:
Pass-through deposit coverage
is contingent upon PayPal maintaining accurate records and
on determinations of the FDIC as receiver at the time of a future receivership of any bank at which we place your funds.
So, from my reading of it, it assumes that PayPal will have accurate records, further assumes that the FDIC will be willing to cover such funds, assuming sufficient funds even existed in the banks PayPal uses at the time of receivership ... and all of that assumes that the FDIC would step in to begin with.
And all of this FDIC insurance talk further assumes that PayPal account holders would be first in line in the event of financial trouble, such as bankruptcy ... that's an assumption that one shouldn't bank on from the NON-bank PayPal.
Ron