It's probably not that much of an issue here as I'm currently blocking bots from the images so they are not easily found in search engines however I will be changing that as they can drive a lot of traffic to a site. If you want to upload personal images I'd suggest using the private forum.
I'm going to be adding some automatic watermarking options so the images will get stamped however that is certainly no where near full proof. Something like: "Uploaded to nepacrossraods.com, Copyright
I'll have to work out the last part, keep in mind when you create an image it's immediately copyrighted by yourself. By uploading it here you are only giving nepacrossroads.com a "soft license" to display it here.
You can batch matermark images yourself using Irfanview or Exifer.