Twttr â€” doesn't sound too bad, right? Well, that's exactly what you'll get if you want to continue using Twitter for free â€” only consonants will be available for writing messages. For $5 per month, you'll also be able to use vowels â€” A, E, I, O and, of course, U. The change, which goes into effect ASAP is not only meant to increase Twitter's revenue, but also to make communication among Twitter users even more condensed. Imagine how much info you could put in a tweet if you skipped those pesky vowels? Only a sucker would pay for Twitter.