I like that it's easy to use (and free) as well! It works great with my Google Apps account so all of our tasks are in one place where we can easily access them from anywhere at anytime without having an internet connection or even being logged into Gmail/Google apps first thing every morning when everyone gets up!! The only downside would be if you're looking something more specific than just general "to do" lists - there isn't anything out-of box built right now but they have been working hard towards this over time though :) If your team uses google docs then using their versioning feature will make things easier too since everything goes through Gdocs anyway ;) We've had no issues yet other tha tit takes some getting acclimated initially because its not what most people expect once logging onto gmail etc which has also helped us grow faster within less months :). Using T.