Redirected Domain Optimisation?

Hello all,

I was wondering if someone could give me an answer for the following?

I have 5 domains, 4 of them pointing to the root domain, the actual site. The 4 redirected domains are keywords rich URLs, the 5th one is the name of the business as the URL.

My questions is, should I do directory submissisons for my 4 keyword rich domains as well as my root domain to get them good rankings or is that a waste of time as it all redirects to the root anyway, which is the one that will be listed.

Best regards,

Mischa

 

You will get penalty for dupe content !!! Better have unique content on every domain instead of redirecting or parking them !!

 

and dont do too many, some may see that as deceptive doorway pages

 

you can't get done for duplicate content if i'm redirecting! That's the whole point isn't it?! The wonderful world of canonicalisation...

 

Google will penalize you if you redirect the 4 domains to your main domain