Hi Erich,
I'm maintaining ShareFire, though only adding a few features and
fixing bugs when I have time. I recently updated the Twitter support
to use OAuth authentication with Twitter.com, as they're changing
their credentials system. These changes, as well as a few bug fixes,
will be in version 1.9, which I should be able to release on Monday.
Before 1.8 you were able to right click a post and mark it as unread,
but there was a bug in the previous version that prevented this. I've
fixed the bug, so it'll be possible to once again mark posts as unread
in 1.9. Thanks for bringing it to my attention.
I could add the ability to delete a post relatively easily, but as
soon as ShareFire syncs it's likely that the feed will provide that
post, which will get reinserted to the database. It'd be necessary to
modify the database to indicate which posts should be permanently
removed, which adds a lot more work, and then provide some mechanism
for filtering by hidden posts and/or being able to undo the deletion.
-Dan