Post-Date Entry (will show as new on friends view)
Short, concise description of the idea
Just like back-date entry, this would cause an entry you've modified to show up at the top of your friends' pages.
Full description of the idea
Sometimes I make a much later edit to an old post, like a post containing my Top Reasons to Love LiveJournal for example, and rather than recopying/pasting it (and winding up with stacks of mostly identical posts), it'd be useful to have the modified post appear as new.
Just like back-dating, this would not be dependent on the visible date and time on the post.
An ordered list of benefits
When making a private post public, like when working on a draft over time and then "releasing" it, it would allow people to read it.
Allows previously private thoughts to be released, in their original context, when privacy is no longer important.
Allows maintenance of a recurring post when new information is added.
Allows me to share a discussion with my friends' list - if new activity is going on in the Comments area that I want people to know about, I would have the option of resurrecting a post months or even years old.
Artistic uses, such as a post repeated on its anniversary, with the opportunity for new comments.
Practical uses, such as a "my journal's FAQ" or "my upcoming performances" entry which would appear monthly.
An ordered list of problems/issues involved
Possible abuse, with the same entry appearing at the top of your friends page over and over, to be obnoxious
An organized list, or a few short paragraphs detailing suggestions for implementation
Note that there are a *lot* of ways someone can be obnoxious on LiveJournal, and the lack of this feature would not prevent someone from being a nuisance. If they bug you so much, take them off your friends list (or group).
Thank you, livejournal mastahs.