Added check to extract embeddable URLS
Fixed bug in Template 4 when examining the Reader Help item
Revised functionality for domain scanning.
Now it can handle multiple domain in URLs, such as
  "www.elcolombiano.biz"
  "www.elcolombiano.co"
  "www.elcolombiano.com"
  "www.elcolombiano.com.co"
  "www.elcolombiano.tv"