Trademark RPMs: what do they mean for you?

The Internet will soon contain hundreds of new top-level domains (TLDs). At the moment, your company may be perfectly satisfied with its main web site under .com, and perhaps a handful of country code TLDs used for certain trademarks, local markets or to protect against cybersquatters. So the question is: If you are not planning to register your own TLD, what does this mean for you?