Mary, it never feels good to find your own content on someone else's site. It's something you worked on and you're acting as a REAL business owner, an entrepreneur who has skill and talent to make it and make it on her own. Along comes someone else, who can only pretend to be as professional as you, and only then in the literal use of your hard work portrayed as her own.
BTW, when you find someone like that who has false info listed in WhoIs you can (and always should) report them to ICANN here:
http://wdprs.internic.net/
Every time I have to file a DMCA and find someone who has falsified their contact info (like I did today... *sigh*), or, giving them the benefit of the doubt... has just forgotten to keep it current, I make sure to report it.
Service providers who do not act above-board either by stealing content or other types of work and/or by not providing correct contact information are the types of service providers who contribute to giving our industry a bad name and I for one just can't stand for it.
I do want to add though, that I have come to a place of total detachment from the 'feelings' that go along with finding my content or designs have been stolen and repurposed. The 'bad energy' that comes from engaging in that wavelength is just not worth it.