I think GP means that facebook spent a lot of CPU cycles getting an onion address that is so human-readable/memorable; I don't remember what the old Silk Road's

I think GP means that facebook spent a lot of CPU cycles getting an onion address that is so human-readable/memorable; I don't remember what the old Silk Road's address was but I think I'd remember if it were silkroadcorewwwi.onion