This is actually really cool. Its the kind of thing I've been really wanting to get the Cloud9 guys to get working with dotcloud. A huge stumbling block for me has been working on my CR-48. Dotcloud, heroku need you to install their CLI witch will obviously give you much more power and flexibility but cant be done if you don't have terminal access.

Now some will say why would you even try to do any kind of dev work without proper tools but I think this really lowers the bar and gives people another frictionless way to get their hands dirty.