We don't have infinite resources to host the free web services. The GeoNames web services are very popular and the number of requests may vary considerably
have other servers for a guaranteed response and up- time with a service level agreement. Please contact me if you are interested.
I certainly understand limited resources, but please let us know if you have shut down ws.geonames.org - it is still not responding, and our tiny nonprofit site (http://www.warmshowers.org) makes 100-200 queries per day using this excellent service. They're timing out, of course. I tested with http://ws.geonames.org/postalCodeSearch?postalcode=9011&maxRows=10 and got a timeout also.
If this wonderful service will no longer be supported (tell me it ain't so!) please let us know.