open q: what’s the best / most respectful way to offer product feedback

eg. there are a few products I used or heard more about at Basecamp/FEST and I’d like to offer my critiques but not in a bashing manner 

have thought one cool avenue could be @0xdesigner style concepts for parts of products I’d like to see reworked

building products /neynar, hacking /farhack, yapping /dylan | dylansteck.com

As long as you are kind and the feedback is meaningful, it doesn’t matter how you deliver it. If their ego cares so much about whether you posted in public or private, they’re ngmi