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You're not looking for sites -- you're looking for people. Develop relationships with influencers in your industry, get your awesome content in front of them, and they may share/retweet/link/discuss it. You can also try Reddit and StumbleUpon, but those are more of a crapshoot.

Hi Dean, First you have redirect to all old urls to new urls ( 301 redirect ). If your website has good backlink profile then don't go for MVC friendly URL. Because even if you do 301 redirection Google will not pass whole link juice to new URL.

Someone asked this here in the past: http://www.seomoz.org/q/avoiding-duplicate-page-title-and-duplicate-page-content-best-practices this should help...