RSS Feeds Empty When Accessed from Website
This feed:
http://q.addthis.com/feeds/1.0/trending.rss?domain=www.findlatitudeandlongitude.com&pubid=zwief&period=month
is fine when accessed directly from a browser or other client. When accessed via PHP file_get_contents from a live website it's empty. Other feeds such as http://s3.spotcrime.com/cache/rss/phoenix.xml work fine from the site.
Any ideas?