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A few tips sitemap.xml - I'd create a sitemap - there are lots of free tools out there to do this for you server configuration - you should fix your Apache server's htaccess file to deal with the urls - you're showing capitals and lowercase letters in the URLs - you want to get rid of the capital letters and only use lowercase ones empty pages that can't be good for your site - here's one example- http://contractors.earthsaverequipment.com/index.php/Illinois/ - you don't actually have any contractors in illinois, so why have a blank page on the site? This isn't the only case of this This is just a few of the issues I picked up on. Hope it helps

You do risk that those would look like duplicates, and the search engines may filter one or more copies out. If they do that, you may lose any link-juice from them (although that's a lot tougher to measure). The links could also just look low-quality, if you're "spinning" out the same article over and over. It really depends on the scope. If you did this 3-4 times with a couple of articles, I doubt you'd have any major issues. If you do it 100 times with 1 article, you may get a short-term ranking boost, only to see those links devalued a couple of months later. If you can get people to post a blurb and the link back to your site, that's definitely ideal. That's the best way to protect the content and signal that you're the source. You can also have them use the canonical tag, as Daniel mentioned (cross-domain), but my concern is that you'd lose the link-juice. I haven't seen a good study on that. In other words, you'd be seen as the source and would rank for the page, but Google might not count the link back to your site.