When you add a disclaimer you have the option to add it at the top or the bottom of a mail message. 'Bottom' means at the very end of an e-mail conversation. The problem with this is that when more people have replied and you reply as well, no one will see your disclaimer, because it is placed underneath all other replies.
I would like to see my disclaimer at the end of my own reply. Just like the signature feature of an e-mail program like Outlook.
See also support ticket #389938.