I would encourage the Western-based left-o-sphere to take a greater interest in the feelings of Libyans when deciding whether outside intervention is warranted in a conflict that impacts them daily.
Clearly there is some evidence of support for Western intervention amongst those doing the fighting against the Qaddafi regime. It's true that this evidence may not in itself justify the Western attacks, because we don't know whether it is representative of what the larger community wants. It could be that the community is merely caught in between, as is frequently the case in these scenarios.
Any use of force has to be justified vis-a-vis the preferences of the affected community; in the context of this fast-moving civil conflict, we should be trying all the more to understand what those are, since military force is already being used against Libyans by their own government. What Western bombs will add to the situation is a very, very good question; but ultimately it is not one for Westerners alone to answer.