How much information can be stored in a unicode-based Twitter message? You might be surprised. Coders on the Stack Overflow site were able to compress and transmit complete images through some very creative schemes. Remember, there’s only 140 characters to work with, but you might be surprised what can be embedded.
What would this be good for? Well, passing along secret, compressed or encrypted short message in the middle of a Twitter message might be of value. In the book Dormant Curse, such embedded messages are placed into somewhat normal looking updates and are used to communicate with Trojan chips slipped into 3D IC chip stacks.