I've been doing SEO for over six years. I've literally helped hundreds of businesses achieve amazing results (top organic listings). Recently, Google has gone to war with people who do SEO and it has made SEO harder than ever. Fortunately, since I manage hundreds of websites I understand all that Google has done. There are not very many people that truly understand what SEO strategies works post panda and penguin (Google name their recent updates Panda and Peguin).
WARNING: Do not hire a SEO company unless they are 100% certain of what they are doing. The common method of back-linking to your site in order to get it higher on Google will actually penalize you now! Google is being very aggressive towards SEO and if you make one mistake your site may be penalized and never come back. So please ignore all those emails and calls you get from India because they'll probably do you more harm than good.
What makes me different? I have hundreds of websites that I own and ranked on Google. That means I have access to data that most people only dream of. I know what works and what doesn't work. I've learned that you have to be VERY smart when doing SEO and the entire strategy should be focused around protecting your "money site" (your main website).
Due to the nature of "negative SEO" I cannot show you all the websites I've ranked on Google, Bing, and Yahoo. But, I can tell you that I owned and operated LocalOnlineAdvertisingExperts.com for three years and you can see proof of all the clients I serviced there.
If you are looking to increase you rankings on Google, Bing, and Yahoo then I'd suggest you hire someone who knows what they are doing. So give me a call and I'll be totally honest with how I can help you. My cell is 403-978-1914 (yep, you get to actually talk to me and not some employee in a big SEO firm that is following an outdated manual or procedure).