Wow, that's a little difficult but I'll try.
First you need to understand the difference between the internet and the World Wide Web (WWW). The Internet is a network of interconnected locations that are able to send, receive and forward electronic data. The WWW is a collection of addresses (websites) that use the Internet for people to visit them. A newsgroup is one of many thousands of special interest groups that make up the Usenet. When a person posts a message on a newsgroup the Internet is used to send copies of that message to all of the many places (hosts) on the Internet that subscribe to Usenet. So the message is repeated at many locations all over the world and people can go to any of many locations/hosts that subscribe to Usenet to download/read newsgroup messages. Whereas, a website is in a single location. If you post a message on a website people must go to the specific address of that website to see what you posted. If someone puts an inappropriate message on a website the owner of that website can remove it. A message posted to a newsgroup is sent to thousands of different places all over the world and, therefore, impossible to delete.
This is a flawed explanation but it was about the best I could do in a few? words.
Easier to use than a newsgroup
There is a major difference between an email listserv and a newsgroup. A listserv allows people to post things, while a newsgroup simply presents the information, and does not allow anyone to post.
NNTP
there is no difference
There are so many good newsgroup readers. A few good newsgroup readers are newshosting client, binreader,unison and so many more good newsgroup readers.
One of the URL's is Spelt Wrong!
munhu
They are about 2 different places
The usenet newsgroup credited with coining the term "phishing" is alt.online-service.America-online
ASP.net is a kind of projects from the .Net family that allows you to create websites.
a newsgroup
Newsgroup