> Are you saying that the RSS mechanism provides a way for the client to
> say "only send me stuff that is newer than $DATE"? If so, then it does
> sound like an implementation problem that the RSS source could improve.
RSS/feed data is just a file on a web server. An RSS reader can ask the
web server if the file has changed since it last accessed it (using
If-Modified-Since and/or ETag headers). Any change no matter how small
will cause the entire file to be sent again.
http://slashdot.org/comments.pl?sid=115129&cid=9752310
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