Hi,
either I'm doing something wrong or the ETag header is not handled correctly by the server. When I send an ETag header with my request, I get the complete feed with the same ETag header, instead of a 304 HTTP status code.
Example:
$ curl -i -H 'ETag: "04be784247c22d2f0bfcf1351ed79d81"' https://feed.informer.com/widgets/8MDQXIQMIB.atom
[...]
Status: 200 OK
ETag: "04be784247c22d2f0bfcf1351ed79d81"
[...]