Now this is a good example of what I'd like to see for mobile: mini-apps, like TadaList or MeetWithApproval, that do a single thing nice and cleanly.

The big gap I see now is an app to help you synchronise with >2 people; getting consensus from 3 or more folks using SMS "by hand" is a nightmare, wouldn't it be nicer if you could just get everyone sent a single message which lets them comment, argue, and decide...