EtherShare is a contract to share information with permanent storage and open access.
The website is not the only one entry to EtherShare. EtherShare is a DAPP. So you can download the html files to your own server or access the contract in other ways.
The contract address is 0xc86bdf9661c62646194ef29b1b8f5fe226e8c97e, 0x475de1f3e1ba5aeefc9fc694852c8fce59b353a1, 0x28daa51dc3d80a951af9c451d174f0c7156c6876, 0x43820f75f021c34ce13ded1595633ed39b79ab47

You can find the state of it on https://www.stateofthedapps.com/dapps/ethershare.

You can review the code and trasactions on
EtherShare: https://etherscan.io/address/0xc86bdf9661c62646194ef29b1b8f5fe226e8c97e.
EtherShareDonation: https://etherscan.io/address/0x475de1f3e1ba5aeefc9fc694852c8fce59b353a1.
EtherShareReward: https://etherscan.io/address/0x28daa51dc3d80a951af9c451d174f0c7156c6876.
EtherShareLike: https://etherscan.io/address/0x43820f75f021c34ce13ded1595633ed39b79ab47.

You can review all the source code on https://github.com/ethershare/ethershare.

Thanks...