powerbasefitness.com not found when i did a google search under
powerbase exercise and a few other descriptions of the product.
Similarly, I could not find any reference to System 21 a Montel
Williams product. Both have been recently advertised on TV. 
Apparently they are not listed on google. Why is this?

The process for adding web pages to www.google.com's search results is
an automated one - done by the 'googlebot'.  The googlebot scours
the web from one page's link to the next, searching for pages to add
to the database, totally uncontrolled by anyone at google.com. 
However, there are ways to improve your chances of being noticed and
approved by the google bot.

To begin, here is what Google.com have to say on the matter from their
FAQs:

"Why isn't my web site in the index?

We add new sites to our index each time we crawl, and invite you to
submit your URL. We do not add all submitted URLs to our index, and
can't make any predictions or guarantees about when or if they will
appear.

Please visit our "Add URL" page to input your URLs. Only the top-level
domain is necessary; you do not need to submit each individual page.
Our crawler, Googlebot, will be able to find the rest. Please also
realize that Google finds most of its pages when our robots crawl the
web and jump from page to page via hyperlinks. The best way to ensure
a high listing on Google is for your page to be linked from lots of
other pages. "
://www.google.com/contact/search.html

The Add URL page is located here:
://www.google.com/addurl.html

However, as stated in the fact, this does not guarantee that you will
be listed.  Here are my suggestions to improve your chances:
 
1.  Add Your Web Page Manually (as I said above)

2.  Get your page listed as a link on as many other sites as possible
- obviously, the popularity of your site (TV advertisements, etc.)
will help improve this.  This is not a point that is easy or direct to
solve.

3.  Check out this site: 
http://www.searchengineworld.com/cgi-bin/sim_spider.cgi 
Enter your web site, and it will show you how your page is viewed from
the point of view of the googlebot.

4.  If you looked at that site, you'll notice that your main page
contains images for most of its textual information - the googlebot
cannot read this writing because it is image form.  Therefore, all it
sees is the little writing down the bottom.  Perhaps you should
restructure this main page, or add some other pages that contain more
text from your site using the AddURL link.

5.  Check out this page to properly employ meta tags to assist your
listings:
http://searchenginewatch.com/webmasters/meta.html

6.  This topic has been readily discussed here at google answers - to
check out some other related answers, click on these links:
 
Google ranking "thesandiegoescort.com"  
https://answers.google.com/answers/main?cmd=threadview&id=57909 
 
Listing with Google  
https://answers.google.com/answers/main?cmd=threadview&id=55306 
 
How do you know when a site has beed crawled and indexed by Google.  
https://answers.google.com/answers/main?cmd=threadview&id=59074 
 
Listing on Google  
https://answers.google.com/answers/main?cmd=threadview&id=66429 
 
Thanks for the question, and if you have need any clarification,
please feel free to ask.  Good luck with your website, and your
listing.
 
bobby_d-ga

I should have specified I was researching not wanting to get a site
listed but this last answer did a pretty fair job of my not so greatly
worded question

Google cannot index all internet sites- most likely they have never
been noticed/submitted when last the robot crawled  the web.
Alternately if they were down for maintenance they would have been
temporaily de-listed. Assuming the later they should return in about a
month