I am new to Area51, but have 151 rep. How can I vote on questions and/or propose new questions for a site I am committed to? I see no up or down vote buttons, no "ask new question" button, and the vote numbers are not clickable when I mouseover. What am I missing?
You can't propose new questions or vote on existing questions for a site in the "commitment" phase.
What would be the point?
The site doesn't need any more example questions or any more questions marked as on or off topic - it has enough (otherwise it wouldn't be in the commitment phase).
The next point at which you can ask questions is when it goes into beta - but these should be real questions.
The system is broken. You should be able to. The system gives a disproportionate amount of weight and influence to early contributors.