I am in a contest and the first stage consist in a popular votation. Just one click is needed ("Votar") no registration, nothing else needed.
Thanks in advance
BTW: for no spanish people, the idea consist in develop micro biogas generators for agriculture, this way the growers can use the low-quality products to save money and the don't depend on Big Energy companies. If I win the price I will invest in a prototype. Of course it would be open-source and it would be developed with arduino.