Scam jobs and sales on Craigslist

As many people may notice Craigslist has plenty of scam job postings. I have seen were people have been scammed by people who need work done and even people acting as normal companies just to get you to send them your resume to them. I am not saying craigslist is bad because by all means they are very helpful. The way I have found when searching for a job on craigslist I always look for a company name or phone number. If there is a company name I then go to Google or yahoo and search for the company. Most big companies have a jobs posting board on there website. I always avoid clicking on links to a jobs site just because that is just to easy to reroute you to a dummy site used to steal all of your information. When I buy anything from craigslist i never have the people come to my house, I always meet them somewhere just for safety reasons for both parties. I also never when selling things take offers from people that are higher than what i post. I once was selling a canon camera and had multiple people say they were on a mission in some other country and wanted me to ship the camera to them they stated they would pay by paypal and sent me an email that if you don't know what your looking for looked like it was from paypal. I myself knew it was a scam because when I get emails like that I always look at the address it was sent from, it may look real because they word it so its hard to tell but look at it closely and you will see a small error in the from address plus when I looked at the paypal picture it was real close to being real but I read it all and noticed they added things so it was photoshopped.