I'd just be happy to know that someone deemed my building worthy of being "Stolen" as you put it.
I wouldn't care if someone stole one of my builds and hosted it on their own server, even if they didn't give credit.
I'd be happy that they thought it was worthy to claim as their own, and even if he claims it as his own and other people play on it on his server, atleast they're still getting the most out of my build.
I'd be happy to know that they've liked my build, and that even more people are atleast getting to see it.
Also, the fact that most of my stuff is expandable, and I usually aim to expand it, I'd still retain it as my own and original. Plus, my building styles can appear to be something that you don't see everywhere. (Not to say they're epic or anything, they're rather simple, really. But, I don't see many people with similar styles).
Also, that build isn't really something that is so brilliant that you should be completely offended that someone is claiming it as their own.
