@izzythepush,
I know civilians were killed in Cast Lead, which is terrible. But, you ignore the fact that many "civilians" are Jihad and Hamas members. And you ignore all the Israeli civilians hurt from years (not days) of Palestinian rockets hitting Israeli towns.
And also you ignore simple logic:
1)If civilians are targeted, it does not necessarily mean they get hurt. E.g. unsuccessful Palestinian attacks on Israeli civilians, and rockets shot down by the Iron Dome.
2) If civilians get hurt , it does not necessarily mean they were targeted. Just like in Israeli strike on Gaza.
So numbers alone don't mean that much. Use simple logic again. If the aim were to hurt civilians, why is it that only targets with militants are hit, with civilian casualties occasionally? Wouldn't it be easier just to carpet-bomb the whole city of Gaza or Rafah to get many civilian casualties? Morals aside, your speculations just don't make sense.
On the other hand, the Palestinians are basically carpet-bombing the city of Sderot, Ofakim etc. with the tools they have a available. I can't imagine what they would do if they had better tools.