if only they could still be upvoted easily..
It would certainly be nice if there was a formal solution for this, but I know it's a tough nut to crack if we want scalability sooner than later (in terms of the technology involved).
But I've also had some success with simply re-posting content that I thought was over-looked.
Also, many of my ruby posts are close to the re-post definition. If I publish an update to an app, I'll just change the first paragraph to highlight the changes and make sure the rest still fits. Otherwise, it's the same post.
There's no reason why people can't re-post what they've written previously, just adding a paragraph to the top referencing why they're re-posting.