WTF is this? Who owns these addresses and who is posting them on open internet?
This database owner's purpose is to prove that bitcoin is secure, public, strong and transparency. That's it. If you know bitcoin deeply, you will get the answer.
This is the bitcoin philosophy - transparency but secure even the nowadays bank system can't make it.
That is why we are Bitcoiners.
Well... if they're indeed private keys, then its not secure. Am I missing something here?
If you go down to the beach and pick up a hand full of sand, does that 'handful' represent every grain of sand in the world or the universe?
The thing that makes private keys so 'secure' is the shear number of them(in a given set), but by the same measure, if you are very very lucky then somewhere in your handful of sand is potentially a valuable 'private key' belonging to an active address holding coin. (you just need to find which one)
Which is why it is good practice to continually 'rotate' your addresses, since it adds to the entropy of 'publicity known' addresses an attacker would need to check his 'sand' against.( if it was a brute force attack)
(yep ok very simplistic but it gives a target for thought)
RF