I decided to go to India to visit a friend, and so the night before leaving I decided to buy a camera, because I wanted to share the pictures with someone.
I don't have it anymore, but I used to have a job where I had to make presentations a lot, and I always found it really helpful when flickr users put creative commons licenses on pictures relevant to stuff I was presenting on, so most of mine here have cc licenses.
But iStockPhoto.com is also cool for that.
-Luke