This morning, TechCrunch published an article titled, With Top Banks In Tow, Financial Service Provider Yodlee Hits 30 Million Users. Here are the stats: - Mint.com has 5 million registered users - Yodlee has 30 million registered users Both figures are impressive, so congrats to the vendors. However, as an analyst, I don't care too much about registered users. I want to know of the total number of registered users, what percent are ACTIVE. The definition of active matters as well. It's great that people are interested enough to register, the bigger question is whether or not they are engaged enough to return. I first blogged about this when Mint.com was acquired.