Are reverse proxies that much better than 301 redirects? Should I invest the time in doing this? I found out about reverse proxies here: http://www.seomoz.org/blog/what-is-a-reverse-proxy-and-how-can-it-help-my-seo

Forgive the newbie question, but now that I have found SeoMoz and OpenSiteExplorer, should I just piggy back on my competitors backlinks? What would be the downside? By way of explanation, I've never had the need to explore SEO before. Our site, Widgets.com has always ranked highly for all Widgets keywords because we have the keyword in our domain and our site has been around since 1998. But out of the blue this summer, a site, let's call them WidgetsCircus.com suddenly began outranking us on widgets keywords, and pretty much every keyword we can imagine in our little widget universe. Now that I have run OpenSiteExplorer, I can see how they've done it. They've pretty much spent the last year commenting on blog posts all over the place, editing wiki pages, etc., and built thousands of links for all these widget keywords. So, I'm wondering: why shouldn't I just go down the list of links and do exactly what they've done? Where they commented on a blog, why don't I just comment right along side them. Obviously, this has worked for them! Wouldn't it work for us too? Or is that too simple?