A resourceful blogger made his privacy-rights experiment on the general.这个是句子的主干.
其中主语是A resourceful blogger 谓语是made his privacy-rights experiment,状语是on the general.
其中made experiment是做实验的意思.
至于hoping to call attention to the black market in phone records是分词做目的状语.所以应独立于主句之外.
望有所帮助!