That is nice to offer bitcoins for like charity and so forth. I know there are some well established charitable companies that will take bitcoins as donations. Now the issue i worry about is the fact that most of this organizations that i spoke of might not know how to properly handle bitcoins so they might sit on them till some accounting person noticed them. That i fear would make my donating to a local cause like hurricane victims a long drawn out process.
There is a saying, that teaching a man how to fish is better than giving him fish. We can absolutely apply that in bitcoin as donation for the needy, it is better to teach them how bitcoin works and how it could change their lives. But if we want to give back the fortune we got from bitcoin, we can donate converted fiat to charity institutions, since most probably there is not yet a system made to donate bitcoin directly to charity purposes.