Ease of use is what makes SpyFu well worth the subscription. The Ad History and PPC features are particularly valuable; not only can you see what competitors have done, you can understand how they have iterated and improved their ads over time. The PDF generator and the data export features make it easy for digital marketers in large companies to pull data out for the purpose of sharing with their colleagues in sales, customer service, finance, and of course the executive.

We use Spyfu for researching competitors and finding new keywords to use in our PPC ad campaigns. I like having the ability to look back over time at the different ad variations. This allows us to historically see which ads are the most successful. Great overall SEO tool.

My team uses the SpyFu keyword research tool, domain analysis tool, etc pretty extensively. Anytime we want to get topic ideas for content, we use Spyfu. Anytime we want to know the type of language to use in our content, we use Spyfu. We also use their app for a lot of strategic planning and decision making (e.g. finding opportunities to sell our prospects, etc). Most importantly, the app is VERY affordable, compared to competitors.