Ok very interesting. Someone could theoretically send messages to another person that is readable by a human but unsearchable by Twitter search.
Conversation
This Tweet was deleted by the Tweet author. Learn more
If you use unicode and select a different character set like gothic, you can't find it with a normal search even if you search the words in the tweet. You would probably have to search the exact same character set. This could allow people to send public messages that can't get
2
5
This Tweet was deleted by the Tweet author. Learn more
This Tweet was deleted by the Tweet author. Learn more
You know what? I wonder what language Twitter thinks it is. That will be interesting to check.
This Tweet was deleted by the Tweet author. Learn more
Yep. I'm checking now.