Google has no more of an idea of who you really are from what you post on this board than I do.
Your post would show up because you wrote something that matched a search request by someone else (maybe you used a term or referenced a shop or technique or your quilt name). I doubt any search result that comes up with any of our posts was deliberately looking for you or me or any of the other posters. (Except in the instance I gave upthread, where I would be specifically looking for a particular post.)
If they clicked through, all they would see is your post on the thread on this message board.
Don't worry. We're not all coming over for dinner. ;-) ;-) ;-)