This reduces the effort needed to run at high speeds and explains why ostriches are able to run at up to 45mph for long periods of time. Ostriches are able to hit high speeds and sustain them for long periods because of their energy stored in their tendons.
When a registrar registers a com domain name for an end-user, it must pay a maximum annual fee of US$7.85 to VeriSign, the registry operator for com, and a US$0.18 annual administration fee to ICANN.
If you have a web site, you should seriously consider registering your own domain name. A domain name is a name like thesitewizard.com or thefreecountry.com, which you can use to refer to your website. Note that you do not have to be a company or organisation (organization in US English) to register a domain name.