Anytime you post photos of yourself, and certainly your dick or your naked body, on an internet site like LPSG, it's best to always keep in mind that you are have put yourself in the public domain and may be subjected to both negative and positive comments. On the whole, I think people here are pretty polite about not saying anything at all if they have nothing nice to say about how someone looks. I once got told by someone
here that my dick -- though big -- was ugly because of my red pubic hair and because it looked like "a snake after swallowing its prey" on account of it's somewhat torpedo shape. I just blew it off, and you should do the same. The bottom line -- simply stated -- is that it's really great for a guy to have a big dick, and if you're fortunate to have one, you know it, and be pleased about it.
Also, it's typically pretty easy to spot the altered or contrived photos, although without a verification shot, it's always possible that the photos are not the actual person. And then there is the whole issue of guys on here claiming to be well hung, but who offer no photo at all.