Digital Signatures in Adobe 8 Professional

I have 2 questions regarding digital signatures in Adobe Acrobat Professional
1.) Is it possible to digitally sign a document multiple times without having to resave the document each time you sign?  This would be really helpful in dealing with contracts in adobe where multiple signatures are required.
2.) If you email a pdf with digital signatures is it possible for the recipient to delete these signatures?  Or to not be able to view them?
Thanks a lot!

Regarding #1, the short answer is no. Every time the file is digitally signed it necessitates it being saved. That's what allow "View Signed Version" and signature roll back to work.
As for # 2, it depends on the version of Acrobat. Versions 6 and 7 allowed anyone to remove a signature as long as it wasn't a certifying signature. In the case of the certifying signature on the signer could remove. Beginning with version 8 you can only clear if you have access to the digital ID that was used to create the signature.
Steve

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