Good point. @unitedworld: If you start posting pictures that you claim are showing the actual "you", you shold think about making a proper introduceyourself post where you show us your face and where you hold up a piece of paper with the word "Steemit" and this random code "56TzG+H" on it. Otherwise people will have a really hard time believing that the images you post actually depict you.
If you don't want to share your identity that's fine as well, but then you should always include a link to the original source of the pictures in your posts.
You are absolutely right. Though, I never claimed the girl in my profile pic is me. As I said in my post, the last thing I want, is for my friends to recognise me here. So, I protect my anonymity. But I agree it's not fair using someone else's picture and I have changed it now. Anyway, my blog is not about my looks, but about my experience and what I learned and can still learn about it.