Did you ever get a reply from this user you gave a 50$ card to?

There is a separate forum on flyertalk called the coupon connection - this forum is only availble to users who have posted 180 posts and been 180 days on flyertalk - so you should have waited till reaching those requirements, then posted there.

If you post an ofer to give or exchange something outside that special forum, you will be risking someone random coming along and stealing it from you. Anyway the FT rules do not allow exchanging outside that forum.

That forum is regulated strictly, and any tricksters are caught by the moderators.

So dont be surprised that this user may not reply to you.

Regards.