Hey,
just go to Cakes page and browse some cakes. On every Cake Page, there is author’s name on the top. You can leave comment directly below the cake, or click on the Author’s Name and leave comment on her/his profile or send a message to author clicking on the Message Button.
-- Michal, http://cakesdecor.com | My Facebook: http://www.facebook.com/michal.bulla