ergophobe - 5:47 am on Jul 11, 2013 (gmt 0)
"Resolve" means that if I type that URL into the browser, I get a webpage at that address (essentially, the process of figuring that a URL points to a given place on a given machine is called "resolving" the URL).
Ideally, you want one and only one address to resolve for any given page. Any variations of that URL should redirect (see below). So a URL with and without a 'www' is TWO different URLs. Only one should resolve. The other should redirect.
Redirects come in different forms. The most important thing is that you want to use a Permanent Redirect. This tells Google that the URL that the user typed in is *never* going to be a valid address for this page. These are also called "301 Redirects" because that is the numerical code for a Permanent Redirect.
Use the Firefox Live HTTP Headers extension to see what's happening on the server level in terms of redirects.
As a general rule, if you have www.example.com on your marketing materials, you want anyone who types in example.com to get redirected to www.example.com
How many pages are indexed in google?
searching on "site:example.com" will tell you
That was just what that guy was doing. Has nothing to do with you. My only point was that no one guy was going to write 18,000 pages of content in 4 years, so he therefore must have a dupe content problem.
Is there hope?
We all knew nothing about the internet at one point. Keep asking questions. When you see a question that you can answer (maybe here: [webmasterworld.com...] ), pitch in and help out so other people with more knowledge will have time to answer your questions. That's how it works!