I have been using Mint.com for my personal finances for nearly five years. Every now and again I have a small issue with an account syncing. I submit a ticket and the problem is resolved. Very nice for a free service. They of course get to know everything about my personal finances. They probably know more about me than I know about myself.
Since I recently acquired a tablet, I downloaded the Mint app and I really like it. It makes keeping track of my finances a lot easier. I had tried it on my phone previously but there really was not enough screen real estate to see what I needed to see. I also like that the app requires a pin to open it so I do not have to worry about allowing someone to use the tablet and seeing all my financial information.