I switched over to WSI from another SEO company that had trouble proving the effectiveness of their work. I was spending money and not seeing results. Since switching to WSI, I have increased "online" lead sources by 4x as before. I know because I specifically ask my prospects when they say "online" if it's organic or through sites like yelp. The team also sends me monthly reports to reflect the growth in my search results and I can't recommend them ENOUGH!