301 redirects from different domains

Hello,

Let’s suppose I have a website, for example www.domain.com, that I am trying to optimize the site for few keywords: key1, key2 and key3.

Would it help from an SEO point of view to buy the domains: key1.com, key2.com and key3.com and redirect them to www.domain.com with a 301 redirect?

I was looking around for information about this and I couldn’t find any conclusive answer.

Would search engines consider this spamming?

What is your opinion?
Cheers
/Luca

any kind of redirect would not help, be that a 301.

your best option would be build mini sites with content targeting those keywords. also you should link to the main site with those keywords.

Thanks for the answer. Well understood.
Now the following question is:
Is better to have mini sites at key1.com, key2.com and key3.com (linking like you say to the main website) or to have subdirectories in the main site like
www.domain.com/key1/
www.domain.com/key2/
www.domain.com/key3/
containing the same content that in the mini sites?

You don’t need to create new pages on your site if the homepage is targeting the same keywords. If it doesn’t then yes, the links should point to relevant pages that target those specific keywords.

Your answer is the first part of you question i.e., It as better to have mini sites at key1.com, key2.com and key3.com (linking like you say to the main website).
But do not have the same content in your subdirectories. it may result in duplicate content. You can have a back & forth link from your mini sites or you can use a read more
the concept of the keyword domain is that a good percentage of the searchers are too lazy to search for a product. Example - iphone. They usually do is type iphone and use ctrl+enter, making it go directly to “http://www.iphone.com”. So if you have the keyword domain you can tap into these traffics and moreover it is easier to rank keyword domain faster.