Miro has grown so fast, and is still growing. They seem to be always releasing new features. It's a simple tool for business people, without getting in the way. We recently implemented Miro in our company. It works great for a small group. But if you're looking for something bigger, it may not be for you. They have an awesome support team and have responded to my question about Miro quite fast. I'm using miro since 2009 and i really like how its developed and all those cool things. If youre interested check this video from their conference http://vimeo.com/7692959 (video) or just read some articles at http://www.mirocommunity.org.