In the past, I’ve been able to build a search on Craigslist, and then copy the RSS link at the bottom left of the search results to add that as a feed to NewsBlur.
>>> import requests
>>> requests.get('https://orlando.craigslist.org/search/sss?format=rss&query=mobility%20chair&sort=rel')
<Response [403]>
>>> requests.get('https://orlando.craigslist.org/search/sss?format=rss&query=mobility%20chair&sort=rel').text
u'This IP has been automatically blocked.\nIf you have questions, please email: blocks-b1557350455781824@craigslist.org\n'
I emailed them and will let you know when they respond.
No the craigslist RSS links seem to work. Just they seem to be blacklisting newsblur (again). This happened last year too see: Problem with Craigslist and Ebay feeds