Too many people get wet because of unexpected storms. Public umbrellas would solve that problem.
Um sistema automatico de pedido de taxi facilitaria a vida do taxista e agilizaria as coisas. Além de possibilitar o pedido pelo Twitter.
Virtual public email. Service. Redirect. Embeddable. Button. Instant. Anonymous. Preformatted for easy filtering. Can be @you or @you#topic
Stop wasting time writing or typing the "th" sound. A new letter should be created that would save exactly one vertical stroke.
People would walk more than they drive if there were moving walkways above the streets, all along its whole path. #rollingstreets
An auction where bids are made with tweets
Create a movement in Belo Horizonte, just like Guerrilla Gardening, to incentivate people to take care of gardens around the city.