Starting today, we are shifting to a two-tiered service: Everyone can use our basic service, Twttr, but you only get consonants. For five dollars a month, you can use our premium “Twitter” service which also includes vowels.We’re doing this because we believe that by eliminating vowels, we’ll encourage a more efficient and “dense” form of communication. We also see an opportunity to diversify our revenue stream. Here’s our mockup of the most retweeted Tweet of all time as it would appear in the new Twttr: