Yes, there is the "issue" of folks who may type Example.cm - when they really intended to type Example.com. That's a game some people play - hunting for the typo traffic - but my gut tells me that the future of typo traffic doesn't look so bright as feed providers grow weary of "certain nonsense" undermining their reputation.
The sales pitch is register the .cm equivalent of your companies .com domain so that your companies page resolves rather than the default PPC page.