I am trying to use http://local.yahooapis.com/LocalSearchService/V3/localSearch
to get some local business data. I am far below the 5000/day query limit. The
API seems to be sporadically working for me, and also seems to be doing some
sort of referral checking. Sometimes the query will work, and 5 minutes later
the exact same query will fail with a 503 or 403 error message. Interestingly,
whenever it fails, I can load the query into a web browser and it works without
problem. The sporadic failing only happens when I use a PHP script on my
server, leading me to believe that Yahoo is blocking certain referrals, or
certain IPs. Is there anything I can do?