- #actionable #specific “ThunderPledge” – a website like Kickstarter for pledging to take collective actions when you reach a critical mass. For instance, there are a large number of people who would consider becoming vegetarian for climate reasons, but feel like it's pointless unless millions of others do the same. Using ThunderPledge you could pledge to become vegetarian only when a million other people have also committed the same. At that point, not only would you know for certain that your change is part of making a difference, but you would have a ready-made support group of people all trying to do the same thing.