Can anybody recommend an SEO for my company?

unintelligence writes: I have been trying to find a decent Search Engine Optimization service for awhile now. All of the SEO company representatives that I have called regarding their services have been vague, wishy-washy, and unhelpful. I'm wondering if any of slashdot's readers can recommend SEO's that they have used before or that they are familiar with. Additionally, it would be nice to know who to stay away from. Thanks!