While this look like a nifty tool for basic monitoring, I think it lacks automated API integration and analysis of trades.
I have been using Cointracking for last two months and I am pretty much happy with it. Here is a post I wrote about Cointracking features that I generally use.
Recently they have added a new feature where you can find out the balance in your accounts where API is enabled. I think that is one feature that most people would find useful.