Do search engines penalize for multiple domains to same site?

[sky]

Is it realistic to build up traffic by registering multiple domains to bring related traffic to the same website?

 

[DubDubDubDot]

If you want a dozen domains listed in Google for the content of a single site that they redirect to, that won't happen. Google will detect the redirect. And you can't host the same site separately on a bunch of domains because of the duplicate content penalty.

 

[enlytend]

If the domains bring type-in traffic or have backlinks, you can safely redirect them to the primary domain using a 301 (permanent) redirect. They won't be indexed but you'll benefit from the traffic.

 

[seeker]

I have permanent redirects, and have not seen any google penalties, like enlytend said.

 

[werty]

Nice Info guys.

 

[bluearrow]

301 redirection is the best way to do it. it tells search engines where's the real content.

 

[lexisdomains]

Redirects are not really a recommended SEO practice. In fact, Google will penalize any redirect (301,302) site that has duplicate content.

 

[DotWeekly]

I am no SEO master and not much of a developer but I do pay attention to things that I see work...

If you do a search on Yahoo.com for the keyword tires you will notice that Tires.com ranks # 6 (for me) in the natural search results. If you were to click on the result, it forwards to DiscountTire.com.

http://search.yahoo.com/search?p=tires.com&fr=yfp-t-501&toggle=1&cop=mss&ei=UTF-8

I am guessing this is a server side Frame URL Redirection, which allows you to use Meta Tags. The meta allows for a serp and appears that at least Yahoo doesn't mind this method.

Tires is a pretty strong keyword, so to rank # 6 on Yahoo for the generic term using a Forward captured my eye.

Can somebody confirm or explain more about the server side frame redirection and if this is what is used for Tires.com . I have an idea of how to do but I want to make sure.

 

[seeker]

Redirects are not really a recommended SEO practice. In fact, Google will penalize any redirect (301,302) site that has duplicate content.

you mean it will penalize the site for having duplicate content, not for the redirect right?

if the content is at one site only, and you are simply redirecting to this one site from 3, 4, 5 domains, in theory there should be no problem. At least I havent seen a problem.

 

[bamaboy]

It won't be a good idea to have all sites in one niche and redirecting them to a single site.

And if you redirect ppl from sites with different niche, you won't get targeted traffic.
Good Luck anyhow.