Hi everybody,
About watermarks, well I guess it's up to the photographer whether he/she wants to use it or not.
Afterall, it's the photographer's photo.
On youtube, many posters use commercial songs as background music for their videos. But I noticed the recording companies do not prosecute. Some of the young kids who did that, were just sent a message from the owners warning them and saying they reserve the right to inject their ads into their videos.
Meanwhile, perhaps, it's more fruitful to just keep on enjoying shooting.