I wish there was a nice way to tell someone they are eating too much and bad choices ? I see people eating things early post op that I wouldn't eat 13 years post op. Or do I just shut up? 

If it's me, please tell me! You won't hurt my feelings. 

Just shut up. 

Chances are s/he is still aware of WLS guidelines.  I consider a friendly hello and the words, "how are things going for you?" a considerate way to see if s/he wants to engage in or avoid discussion.  Engage usually means an invitation to listen; avoid usually means to shut up.

Depends on the context. If they ask you for help or advice, go for it. You can even ask them if they would like your advice. If they don't, it's not your place.

Shut up. If they wanted your advice, they would ask for it.  Or at least, they would ask questions about how much and what you are eating in a surrepticious [sic] attempt to figure out why you are successful and they are not.

I understand completely. If they ask you for help or your honest opinion, it's fine. Otherwise, like the others said...just zip it. 

It is frustrating to see ( or read about ) people eating what they shouldn't, but 9 times out of 10, they know it's not a good choice and food policing never works out well. 

I think sometimes I have been the food police and you're right, it's none of my Damn business unless asked.

IRL, I never say anything about someone's food or what they are eating -- unless specifically asked.  Even at real -life support meetings of WLS patients -- I never say anything about someone's food choices, unless we are talking about menus and food option issues and feedback is requested.

Here, however, if someone posts their food, then I say it.  If they don't want their post-WLS eating scrutinized, then they shouldn't post what they are eating.  

I guess I am a jerk.

I would rather be a jerk that tells it honestly, than a "nice" person who enables someone to waste their one opportunity. 

It's such a short honeymoon period.  So short.  

I'd rather someone tell me to F-off -- than risk not helping someone make the most of it.

I would shut up about it- If they ASK I would tell them to stay clear of blah blah- or if they say- I can't seem to lose- then you ask what they have been eating- then help them.

If I were just out in public and someone told me not to eat something I would probably punch them in the throat.

Just my two cents.