No signpost adds.
Craigslist is an online local classified ads service, so your ad has to
be relevant for the community to which you post. Cross-posting a general
ad in multiple cities is considered spam and goes against Craigslist's
terms of use, but it may be considered legitimate if you live near two
cities and your ad is appropriate for both communities. In this case,
wait at least 48 hours and remove the original ad before you post the
second one. If you try to post two similar ads at the same time, you'll
get a blocked message.