Does asking to see a ccl discourage shady traders from responding to your ad? Serious question....
IMO yes it does. I prob don't need to see a permit for someone that has been on here for a few years with lots of good feedback. But someone who joined yesterday? Yeah I'd like a quick peek at it but I'd make that known ahead of time.
A few years ago I was selling a rifle and I clearly said in the ad that I would like a quick peek at a carry permit. The potential buyer (who was new with no feedback) said that yes he did have a permit and he had no problem showing it to me. Right before we set up a time to meet he let it slip that he didn't actually have a permit and he was actually buying the rifle for his friend. I told him that was very dishonest and there was no way that I would sell him a gun. He got a little pissed about it but I didn't care at all and slept very well that night knowing that at the very least I kept a liar from being an armed liar.
The better we police ourselves, the less likely it is that we will lose this site. Don't get so comfortable doing business here that you become careless. We are dealing with real weapons that have real consequences if they fall into the wrong hands. Don't ever take that lightly.