In mid 2012 I used bitaddress.org offline to generate address/private key pairs. I purchased bitcoins and had coins sent to these addresses. Do I have to move these bitcoins to keep them in the active chain? (I've read about the May 15 deadline to update the client, but never use a client).
Uh. No.. leave them be. Unless you need to spend them.
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A high quality answer on Bitcoin.SE would remove confusion about an "active" chain and inform @d-a-w that the requirement for the May 15'th update applies to Miners in particular. (etc) – halfbit Mar 25 '13 at 21:30