When you link to a site insert the entire url. The url format should be like the links you see below:
When you click on the LINK button it will already have http:// there ready for you the add the rest of the website name. CAUTION Be sure you do not cut and paste a link that also has the http://. One must be erased or your links will not work.
Also, be sure to make your links view in the same window by clicking on that option.
Finally be sure to check your links by viewing the post.