Yes. But not yet. We're iterating the product on web first - it works well on a mobile phone in the browser.
If we can build a popular community for the web we know it will be exponentially more popular when we add mobile, but it's no small undertaking for a very small team, so for now, please bear with us.
Making Bebo invitation only is not about excluding people, it is about ensuring that the community grows in a sustainable manner.
Member reputation is at the core of Bebo helping to create a safe and pleasant environment in which to spend one's time.