Don’t post anything unless you’re willing to take ownership of it. I’m putting out my life here on the internet for anyone to see, you should keep that in mind if you comment.
If you purchase something, of course I’ll make best-effort to keep your data private from anyone else. I’m not perfect though, and the Chinese have been known to be sneaky bastards. If it’s on the internet anywhere, it’s probable it’s in their little yellow hands too.