Well, they want you to post them as attachments. It lets others choose to see them (dial-up users).
I believe at one time only Supporters had the ability to post attachments. Not sure if that is/was really true? Click on the "Go Advanced" and scroll down. You should see a section for managing attachments (attach files). If it's not there, or you already knew this info, I don't know what to tell you
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