# File lib/flickr/auth.rb, line 23
        def login_link(perms='delete')
                args={ 'api_key' => @flickr.api_key, 'perms' => perms}
                args['frob'] = self.frob
                args['api_sig'] = @flickr.sign(args)
                return "http://flickr.com/services/auth/?"+
                        args.to_a.map{|arr| arr.join('=')}.join('&')
        end