I've been working with SubmitInMe for over 3 years and that alone should say something. They have helped hundreds of my clients get top search engine rankings, improve their public relations and build hundreds of thousands of high quality links. Their service is 100% reliable, their prices are more than reasonable and the staff is top notch! There are other link building firms out there, but none match the quality and cost-effectiveness of SubmitInMe, and they always on the cutting edge of link building techniques such as video, social bookmarking, podcasting, and ebook distribution. I can think of no other vendor our company has that I would recommend more highly.