Hi Carlos.
After having some of my images "borrowed" without permission ( i have seen them on two different websites), i now put a watermark on all my images just in case.
Although with one of the images, they deliberately cropped out the watermark.
It is unfortunate it had got this this as some people think an image on the internet is fair game.
Sometimes i like to put down the bottom which object, total exp, date of imaging etc to give the viewer any info straight up without me having to track it down later.
I don't know about others but when i saw my image without permission on another persons website, i can say i was not a happy little photographer

I would suggest you watermark your image too, especially your latest eclipse images, they are beauties as someone might feel they need it more than you one day