Does this have an effect?

[aj_nsc]

Say I have twenty registered domain names, and one site. Instead of having all of these domain names forwarded to the exact same physical page on a sever, would it increase google rankings (or any search engine for that matter) if I set up a physical main page for each of these domain names that looks exactly like the main page on my website and when any of the navigational links are clicked, it would link to that section on my one site?

Read this through a couple of times if it doesn't make sense at first.

Also, please don't anybody come back with BS answers calling me a moron for trying to do something like this, it's for a client. Give me a real answer if you know it, will this have any effect on my search engine rankings?

Thanks for all your help.

[scragar]

having multiple copies of the same homepage is not recomended, not only will this increase the effort required to update, but it will add to confusion amongst visitors.

another point to note is that most search engines increases ranking based on the number of site pointing to yours, if you have 10 home pages, that means each one will only get about 1/10th of the publicity as far as most search engines are concerned.

[knowj]

if you have sites that link to each other as they build a page rank there links will become more valuable.

you need to be careful here as this could be detected as a "black hat" technique and end up with major search engines blocking all the websites.

If you however have 20 sites all with valuable content that happen to link to each other with the correct phrases/key words this would help build your page rank.

e.g have if you have a article on a page on web development on mac
having the link with the text web development for mac linking to this article with these key words will boost the page rank as the content is relevant to the link that is refering it.

If you are going to use this technique you need to take into consideration:
+ the server it is hosted on (google has eyes and ears everywhere if all the sites are on the server it will detect something fishy going on)
+ if all the links on a page link to one source it will devalue the page also if the links aren't relevant it will be seen as trying to device the user
+ whois records. no one knows how page rank work apart from google i would expect that the whois is logged/checked when building an index.
+ natural link building is the best way forward (you link to me ill link to you) if the content is quality digg, delicious, readit etc... are valuable assets - viral marketing