While I appreciate what you're trying to do, I find the warnings you give to be just as annoying.
I get all excited to see someone posting a comment on one of my posts, and damn it's arcange, I love that gu... oh man, what's this crap? No, I wasn't going to send some random steem because they asked me to. What did you think of my post though?
It's always hard to find the right balance between security and user's comfort.
But to me, security is priority and I aimed at preventing user's from being scammed, even if my warning could be found a bit intrusive or annoying.
Unfortunately, there is no indicator to know if the user who will receive my warning is well informed about protecting himself or not.
Sorry to disappoint you.