def parse_post_collection(body)
        dom  = parse_and_validate_response(body, :root_name => 'posts')
        dom.root.elements.collect('post') { |xml| Post.from_rexml(xml) }
      end
def parse_post_collection(body)
        dom  = parse_and_validate_response(body, :root_name => 'posts')
        dom.root.elements.collect('post') { |xml| Post.from_rexml(xml) }
      end
Parses a response containing a collection of Posts
 and returns an array of <tt>WWW::Delicious::Post</tt>.