It takes time to build rep..
I haven't been "burned" yet, all the seeds I've offered were for free on the other thread, No reciprocity was expected, however some bothered the hell out of me for a freebie, when things didn't go smoothly. But I made good on sending stuff. And then they just disappear.
My rep is good, its their rep that's in jeopardy.
Thats why there is a thread to identify troublemakers. And the ones that are solid need to be given feedback that the trade was good.