If you after for traffic only, it is not worth it to snap a .CM domain name besides the high cost of maintenance. Though if you want to protect your own trademark, then go ahead.

"Trademark Attorneys Warn Companies About the Upcoming .CM Cybersquatting Possibilities.

In light of recent announcements regarding Cameroon's country code Top-Level Domain, .CM, being opened to public registration, Tresa Baldas reports on Law.com: "Trademark attorneys are warning companies about a new target for cybersquatters known as '.cm,' which is the country code—or top level domain—for the West African nation of Cameroon. The dot-cm domain is a hot target for scammers, they say, due to 'cm' being a common typographical error for 'com' in the popular dot-com domain. Attorneys say this is significant to brand owners because Internet users searching for brand owners' Web sites frequently mistype dot-com as dot-cm and wind up on a bogus site. Not only is Web traffic lost, they say, but a brand name can get diluted or tainted along the way." (2009, CirceID)

Read other posts related to .CM
http://www.king.net/search/label/.CM