Craigslist gave full freedom to people to post free ads with the
result that spammers went into overdrive with the result that Craigslist
had to wake up and take action. At one time you could post links to
your site, include external images and view tracking. All these may not
be possible since Craigslist modified its rules. This has affected
people, especially those who use Craigslist for real estate marketing
across the USA.
