The only explanation I can think of is that in some situations> there is a limit set on the number of pages displayed from one> domain for one KW.

Interesting thing happened.

One of the words I have optimized one of my pages for is> "dyslektyk".> Not very competitive SERP, so I was able to position it as #3> and #4 (almost without IBLs, just on-page optimization) with two> pages:

(a) http://www.bpp.com.­pl/> (b) http://www.bpp.com.­pl/?left=dyslektyk-2­&right=opis

That was situation last week. Then I decided that the page (b) -> which is an entry point for someone looking for my program - is> not designed for conversion. So I added new page:

(c) http://www.bpp.com.­pl/?left=dyslektyk-2­&right=dyslektyk-2

that is (hopefully) more 'catchy'. KW density and internal links> are almost identical as for old page. Google spidered new page few> days ago and yesterday it appeared in the SERPS - replacing page> (b) on the #4. So far everything looks logical. What is really> interesting is that page (b) - not modified - DISSAPEARED form> the first 500!

The only explanation I can think of is that in some situations> there is a limit set on the number of pages displayed from one> domain for one KW. Any other ideas?

I bet what happened was: Google decided that you have just updated> your existing page. Their bot has problems reading URLs containing> query variables.

In your case the first did not change at all:> ?left=dyslektyk-2, and only the second one (right=...) changed. They> decided, and I believe rightfully so, that it's a secondary parameter> that does not create a whole new page and maybe only used for tracking> purposes or something similar.

Borek wrote:>>

Think this is a well-known fact. Usually the limit for each domain seems> to be two pages, the secondary result for the domain being shown with> indentation after the primary.

It has? (I say: no)

John Bokma wrote:>

Borrowing from one of your recent posts here ­, think in terms of> user experience. If long dynamic URLs would be OK for Google (using> them as usual example), then a smart (and unscrupulous) webmaster> could feed Google a link like this:>

http://search.msn.c­om/results.aspx?q=si­te%

Then this>

http://search.msn.c­om/results.aspx?q=si­te%

then substitute "perl" or "PHP" for something else and then do it> 50,000 times. The pages that come up are full of very relevant> keywords and they all have links back to your site.

Well, MSN may not be the best example> 'cause they have the click log redirects, but you get the idea. What> it's going to do with your IBLs that Google relies upon?>

What I'm trying to say is this: it is not to a search engine's> advantage to be able to read long dynamic URLs with plenty of query> parameters because they will be open to many more ways of abuse.

Granted, they do> index at least some if the dynamic URL pages, but the more parameters> there is, the less probable it is that the page will be indexed.