Did you get an email claiming that your cell phone is about to be assaulted by telemarketing calls because of a new cell phone number database? Those claims are not true. In fact, federal law prohibits telemarketers from using automated dialers to call cell phones. You may place your personal cell phone number on the National Do Not Call Registry, but there is generally no reason to do so. For more information, see the FTC's press release "The Truth about Cell Phones and the Do Not Call Registry".
http://www.ftc.gov/opa/2007/02/dnccellphones.htm