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You need to register your EOS address and then put your EOS into that address for the June 1, 2018 1 to 1 swap for the new EOS.io Blockchain tokens.

The most easiest way to achieve this is to download the Exodus Desktop wallet. They have a auto feature where you simply click the EOS registration button and its done for you automatically. Then EOS holders get Air Dropped for every Dapp that comes onto EOS.io.