Can somebody explain how a donate button like the one on this page complies with the PayPal TOS? I looked into adding one to a site, but the PayPal terms seem

Can somebody explain how a donate button like the one on this page complies with the PayPal TOS? I looked into adding one to a site, but the PayPal terms seem to make it pretty clear they're for non-profits or giving money for a specific cause. If you get >$10k in "donations" they can/will even hold your money and require "proof" it's going to the cause you tell people it's going to. I've seen the buttons on a number of sites, and they rarely seem to match up with the PayPal TOS for donations. Does PayPal not enforce that requirement? In my case, I've decided to go with a small, one time signup fee, but I'm still curious.