Blogspot or Wordpress.com Redirect?

[reeljerc]

I have multiple domains with the same registrar.  Is there an SEO benefit to create complimentary blogs on blogspot, wordpress.com or other "free" blog sites and forward these domains with the purpose of backlinking to the main site?

[RyanKent]

The short answer is no.

Your site can benefit from other unique sites (such as your blogs) which link to it. In order for those links to have value, the PR of the linking page needs to have value which means other sites need to link to your blog site. In order for that to happen you would need to create quality content and place it on your blog sites. Your main site would benefit more by placing your blog articles directly on the main site then by receiving links from your other microsites.