TweetageWasteland is full of great posts and has quickly become one of my must reads.
From todays post (Titled, awesomely, “Tweet You and The Horse You Rode In On”) which compares the ease of communication today to the time of the pony express:
Adjusting for inflation, it would probably cost you a couple hundred dollars and require about twenty-five guys and a couple hundred horses to deliver a message. One assumes that would dramatically cut down on retweets and messages that contained only the letters LOL.