Yes, We're interested in this area. We're creating Saasly.com that mines your inbox for invoices/bills from SaaS vendors and presents you with information about how much you're paying for different services.

Here's the link to the original thread: http://news.ycombinator.org/item?id=3901164

If you're interested in what we're building, sign up at Saasly.com: http://saasly.com