A domain name (colloquially called "domain") is a part of the web sites's URL ("web address") consisting of minimum one (eg in case of .com), two (eg .sk), or three characters (eg .de) and an extension like .com, .net, org, .biz, .info (generic TLDs), .de, .us, .es (country code TLDs).
The domain names are used to identify web sites. For example:
ibm.com, nbc.com, starbucks.com, irs.gov
(in some you need to type "www.domain.com")
This statement is also known as so-called Harris' Lament, and it can be applied to many different things with inherent scarcity such as good apartments in New York City, boyfriends, or in this case, domain names.
Well, it is not easy, but it is still possible to register interesting domain names. We can help.
Also there is a possibility to acquire already registered domain names from their owners. Some of them are too expensive, but some are reasonably priced.