$100,000 USD, but with a covenant in place to keep it running in read-only mode forever. $300,000 USD without the covenant.
(Assumes new owner takes over the $30,000/year hosting bill the moment the transaction completes. See Maciej's comment somewhere in the great-grandparent's thread with that number - $2500/month hosting).
> I just spoke to Pinboard founder Maciej Cegłowski. In a statement, he said “I am the greatest.” Ceglowski also confirmed the purchase price for del.icio.us, which was $35,000.
This is gold and yes sir you are pretty damn great! Good job.