Zirr.us - To do list 2.0

Zirr.us is a very simple "to do" list for the rest of us. They incorporate a number of web 2.0 characteristics, like tag your tasks. Zirrus gives users two "to do" lists to keep track which can be defined as "Braindump" or "Now" for more immediate "to do" items. Zirrus lets you view your items in both a list and cloud view, that allows items change their font size according to various priority levels. Source: Somewhatfrank.com