Company that can be anywhere in the world. US companies use this
.com = commercial .net = network .org = organazation .gov = government
Com means commerce and org means organization. While many people believe com refers to computer, that is simply not the case. Dot. com addresses and URLs refer to business or commercial based sites. Dot. org addresses and URLS refer to public and private organizations.
Net is short for network & com or comm is short for communication.
You can make an email account on:yahooaolgooglemsnmailAll of these are dot com URLs.
If you're talking about the '.com' at the end of website URLs, then it means 'company'. '.org' means 'organisation', '.gov' means 'government', '.edu' means 'education', '.au' means 'Australia', '.nz' means 'New Zealand', '.uk' means 'United Kingdom'.
You don't always put a com after it. It stands for commercial. Other common endings include .gov (government), .edu (educational) and .mil (military). Other places end URLs with the company code, like ca (Canada) and jp (Japan).
.com (or dot-com) is the designation for a URL address on the internet. Answers means the solution to questions.
You haven't seen much of the internet if you believe that all URLs end in .com. You could greatly benefit from visiting some sites that end in .edu or .gov and even .org. Web sites in countries other than the US often use their country abbreviation at the end, such as .ca for Canada or .jp for Japan. And while WWW is the most common, there are other prefixes out there such as mail and WW4
.es is the country code top-level domain for Spain. This means URLs with a .es in the end come from Spain. The TLD .ES could also stand for 'Executive Suite'
Tumblr URLs can't start or end with a hyphen.
.COMmercial
Clean URLs in Drupal are URLs that do not contain get parameters. (In other words, they don't have the ?a=b&c=2 junk at the end of the URL.) Clean URLs instead use a rewrite. This makes the URL easier to read, and allows some search engine crawlers that otherwise would not be able to crawl the page to do so. See the related link at Drupal for a more in-depth explanation as well as instructions for enabling clean URLs in various versions of Drupal.