To begin, let's keep it simple. Of course, interpreting email addresses is not always as simple as that. And don't forget that the name you see may not be real. Believe me, Bill Clinton doesn' t work for us. Second, the first part of the address may not be a name, but a department.
Many companies offer generic addresses for particular company services or areas.
If you send mail to these kinds of addresses they are usually forwarded internally to the appropriate person or department. Be warned though, many companies do not have a very good record when it comes to email management. Even if it is forwarded, it may take a while to generate a response. Some people use these kinds of addresses to give the impression that their organization is bigger than it really is. You see, you can own or use a domain name for email even if you don't associate it with any site.