hmm. Personally i think when u delete a tweet, you should not be able to embed it. If you changed your mind about a tweet, you should be able to decouple it from your account. If people want to refer to tweets, how about a screenshot? It's safer, faster and cant 404 when twitter is down.

And i think the whole "they edited my page" statement is ridiculous. You EMBED a part of twitter into your page. You know it can change. If you embed a youtube video, and the owner deletes it, it wont play anymore. obviously.