One of the biggest threats to working MLM genealogy leads is the Do-Not-Call Registry. Recently, the number of phone numbers registered under Do-Not-Call Registry surpassed 100 million. That number is significant, because the Registry has only been in operation for over two years. Apparently, these people are getting wiser into the kind of marketing being offered everyday. Some of the opinions based on generalizations and experience may be. One study run over 100,000 MLM genealogy leads through the DNC scrubbing process. It was found out that approximately one-third of the people on the list were on the Do-Not-Call Registry. If you are planning to call MLM genealogy leads, protect yourself by having your list scrubbed against the Do-Not-Call Registry. Many companies are already providing this service. Just make sure that you are dealing with a reputable one.