"Important Notice (October 23th, 2013):

Please be advised that ActiveMining is implementing the following rules and procedures for Investors wanting to keep their shares:

Investors who fail for any reason to provide the information necessary to obtain "Verified" status on Bitfunder are encouraged to transfer their shares on BitFunder to the Bitfunder user AMC-TENDER no later than November 6, 2013 before dividends are paid.  All Investors transferring their shares to this account will continue to accumulated dividends on their shares. 

The October 30th dividends will be suspended and accumulated for payment on November 6, 2013."

So as a US share holder, do I move my shares over to user AMC-TENDER?
Also I don't know what Ken means by "sign" when he says, "to sign the Bitcoin address in their Bitfunder account at a later date."