When I first started on digital photography (I was using Film before then), i used to live in the Philippines and I would upload to a (really cr@ppy) site called photo.net.ph; so I had quite a few shots there.
So lo and behold, I'm walking through a mall in Guangzhou when I see a travel agency advertising for flights to Manila. The picture they used was of Ortigas (a secondary CBD district of Manila) by night... and it was eerily familiar. I dug through my old files and bingo! there it was:
And it was used again here:
Lesson learned: It's never too early to watermark your pictures.