My buddy James was trying to sell his Marshall guitar amp on craigslist.
Someone tried to steal the amp from him using a fairly common craigslist scam. The person contacted James as an “out of state buyer” offering to buy the amp, but only if James would accept an out of state check. The buyer claimed he was going to send a moving company to pickup the amp.
The answer to any inquiry like this is “Hell no!” (Or your favorite angry Samuel L. Jackson quote)
If James had gone through with this he would have been left with a bad check and no amp.
Practice safe computing with a healthy dose of skepticism on craigslist.
The Geek Whisperer 
On-line shopping seems to more and more unsafe. E-bay is also in a similar issue, isn’t it?
I don’t know if it is any more dangerous than it was a year or two ago. I do know that everyone needs to be mindful of their financial interactions in the real world and online.
If it’s too good to be true, it probably is.
If a buyer or seller is making the exchange complicated, they are probably trying to rob you.
Also be aware of job offers on craigslist. If the offer seems to good to be true, it probably is. Spammers lure unsuspecting job hopefuls to click on links to finish the application process, or just responding gives them your email.