I've bought and sold on CL. I've always put my cell phone number in the ads when I'm selling and I've never had a problem with people calling. People will ask me to hold something and I tell them "No." First one with cash takes it. I've sold a pool table, fridge, couch, small electronics, and some video games. Tried books, but didn't have any luck--but I haven't had any better luck with them on amazon, either. Books just don't have much value to people, I guess. My fridge sold within an hour one Sunday morning--gone that afternoon.
I do get the "Will you ship the item (pool table) to El Paso?"

Sure, buddy. I just delete those e-mails. I also got one whose e-mail addy was a couple of Spanish words that seemed familiar--the e-mail sounded sincere so I wrote back. Out of curiousity, I googled the words and

yikes, they were familiar all right. Nasty nasty.
Craigslist is a great tool, and I recommend it to everyone. You sure can't beat the price, and if dealing with a couple of nuisance e-mails and some flakes that don't show up is all that's wrong, well, I can deal.