Hello PastorRick,
The people over at Google have learned to never say never, because there always seem to be exceptions. So, what they do say tends to be rather generic.
At
http://www.google.com/webmasters/2.html they say
Quote:
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We are able to index dynamically generated pages. However, because our web crawler can easily overwhelm and crash sites serving dynamic content, we limit the amount of dynamic pages we index
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At
http://www.google.com/webmasters/guidelines.html they say
Quote:
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If you decide to use dynamic pages (i.e., the URL contains a '?' character), be aware that not every search engine spider crawls dynamic pages as well as static pages. It helps to keep the parameters short and the number of them small.
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And, upon doing a search recently for a "similar to" using as a seed a URL with a "?" in it, I remember seeing a note that they only check the first 10 ... was it "words?" "Elements?" <sigh> I forget the exact phrase.
In any case, there is a limit. The result is that the shorter the better. And many people have translated this into "difficulty with ? means don't do it at all."
Hope this helps.
Hal