James M Snell wrote:
One question: what's a reasonable length of time to keep the deleted-entry elements in a feed? We don't really want to keep those things around forever.
Actually I think I probably would recommend keeping them forever. Just treat them like any other entry. If they fall out the bottom of the feed window that's ok, but if the server implements next/previous links to history feeds, then the tombstone could still be found in the archives.
Anything else is just guessing. You really can't tell how regularly a user might update from your feed. Now if you don't support history then it's just tough luck - the fact that they've missed out on entries is more of a problem than missing out on deletions. However, if you do support history, it would be a shame not to support tombstones in that history as well.
Anyway, that's my preference. Not necessarily a SHOULD recommendation - just my personal opinion.
Regards James
