Hey, stuff gets stolen even when it IS copyrighted.
If they want to take it, you can't protect yourself. Some people think if it's on the Net, then it's free. They never heard of copyright protection, and the rest simply ignore it.
All my books have been pirated and put on free download sites. I've put alerts in place so I know when it happens, then I have to go to each and ask to have them taken down. Those sites don't make it easy, either.
I have to prove I'm the copyright holder with disclosure of my name, addy, phone, and the ISBN number of each work, but the pirate is guaranteed full anonymity! Hardly fair!
We may joke about piracy, but it's not funny to a mid-list writer struggling for sales. When the publisher sees our sales are down they don't offer a new contract--or if they do, it's for much less advance money.
One writer I heard of estimates she's lost over 8000.00 in royalties last year because her loving fans helpfully posted her books for free on these sites. What's really griping her is she has short stories up for FREE on her website and they took those too. The stories are to promote her website and thus her books, but the pirates didn't bother to put in a link, defeating much of the purpose of having the stuff up.
I'm not hijacking this thread about how piracy helps or hurts a writer, only that you can put all the copyright symbols and warnings you like on a page and there will always be a thief who thinks it's okay to boost your stuff.
OTOH-- Joe Bob Briggs said:
You don’t get widely plagiarized until you’re widely published--and then it doesn’t matter. Trust me on this.
Of course he said that before the Internet made piracy such a "fun" hobby for some.
Put in whatever protections you like, but be aware that there's always going to be a selectively blind joker who won't respect it.
Chances are good it won't be a pro writer, though. Unless your name is Cassie Edwards, pros tend to respect the works of others!