Man kills 8 children and injures 5 at China elementary school

Wall is also great at finding keywords in the strangest of places; in the index of a book or a news story, in a trend, search boxes, and even in junk mail. He says that junk emails are a rich source of relevant keywords because they typically make an offer and answer many related questions that help people convert. Wall says business owners should also look carefully at which keywords are being used in television adverts.