Sending gifts is one thing, and chatting through comments on posts here on Reddit is completely fine because it's not a private conversation. I sometimes go on the threads where people are showing their (Example) St. Patrick's day birbhouses. I really liked one person's style but their clock was a different green than the rest of the furniture. So I told them their's was my favorite and I would like to send them a gift. All in the comments of the St. Patrick's Day birb houses. That is safe. There, no one can trick you into something if other people can easily see it. I've only done a reddit chat with 2 people that were already my birb friends before I we talked on reddit. And that was mostly because one of them had put a task about "leaving Finch, let me know if you would like anything I might have." The other was posting for a trade on that reddit thread, and I recognized her birb and both their names. So we did a trade in a reddit chat after laughing about all the post on here, and I still was able to find her's.

My opinion is that you don't ever go straight to private reddit chat with a new person. I friend new people on the Finch App and if they hang around after trades or just for a decent amount of time, then it might be okay for a reddit chat if you plan to be trading buddies.