To answer - yes, and yes. The Internet is a big place and there are plenty of search engines that can find what you're looking for... IF you know what you're looking for and how to search properly. Most people aren't going to search for nudes of themselves (and 99% of the posts here don't use actual names) so it's possible, but unlikely.
If it's someone you know personally, then odds are they could logically deduce the source of the post, based on what is posted.
Rule of thumb (for ANYTHING you put on the Internet) - don't post it if you can't handle the response/effects.
Taking a break from faking for a while Starting Jan 1st, 2016.
Thanks for all the fakes everyone has done, I've enjoyed faking for you too! I'll be back at some point, I'm sure.
Hope you have a great year!!!!