Translations:How To Use Freecycle/110/en
From FreecycleFAQ
If you are viewing the posts on My.Freecycle and wish to respond to a post, click on "See details" and then click on the green button "Reply to this Post." This opens a text box where you can write a polite request asking for an Offered item or respond to a request for a Wanted item. The response goes directly to the member's email.