Quoted from GPS:I am curious about your comment that Craigslist is "dangerous". Care to elaborate? I agree that one needs to be safe ...
It's no more dangerous than any other classifieds medium that doesn't track the user.
The key difference is knowing who you're dealing with. Pinside & Facebook you generally are able to research the person a lot. Craigslist you need to spend a little more effort (and you should).
How risky is carrying a few thousand dollars around to you? Taking it to your buddy's house is probably fine, taking it to a random person's house is more risky but still probably fine.