One thing I remembered from the Mint.com case - they were selling to the news not themselves directly but their by-product. What do I mean by that? In your case you can analyse your customer cases and find some interesting common patterns like "using word Love in the tag line usually gives 50% better results etc etc". Or "compelling tag line can not exceed 5 words - our research proved etc etc"

You have plenty of data to play with and I'm sure there are extremely interesting points you can make.