I had been looking for one application to handle multiple accounts -- for me, I wanted to see tasks on MobileMe and Toodledo. The other competitors of these types of apps do not offer this option, and this is the only application I have found that permits me to have both at the same time. The initial creation of the login with this application is for an intermediate user who is not afraid to learn about things like a Unique ID for Toodledo that is available on the settings page of the Toodledo website, and/or for users who know (or guess correctly) that the tasks for MobileMe are stored by default in the "home" directory on the MobileMe servers. The application is brilliant and I have made some feature requests to the developers to further enhance the user experience. The developers were responsive to my inquiries regarding the initial setup. My advice would be to buy this application, take the time to patiently configure the options and read the documentation, and then periodically check back for application updates, and give praise to the developers so that the application continues to receive updates in the future.
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