Twitter doesn’t consider vowels necessary anymore. The microblogging site unveiled “Twttr” the free version of Twitter where you are strictly prohibited from using vowels in your tweets. If you can’t write in English language without using those pesky vowels, you have to shell out $5 a month. The service takes into effect on April Fool’s day, yet another tech prank after the creative Google Nose that allows you to smell products on your monitor.

On Sunday, the world’s second most popular social networking site said on its blog that users can tweet with consonants for free. To have access to premium “Twitter” that includes vowels, users will have to pay $5 per month. That’s a nice attempt to generate more revenues. The younger generation has already said good bye to vowels in their text messages. Now Twitter can monetize older users who aren’t comfortable writing without vowels.

Twitter said eliminating vowels will make communication more dense and efficient. And of course, it will generate more revenues for the company. The changes have started taking effect from today. The changes are rolled out to a small percentage of users, but will cover the entire user base within a few days.

So, how will your tweets appear without vowels, the company provided a mockup of the most popular tweet of all time, Barack Obama’s re-election, to give you an idea.

twitter-announces-twttr-allows-only-consonants

However, you are allowed to use two things: Y in your tweets and vowels in URLs. Languages that are based on non-Latin characters will remain unaffected. That includes Japanese, Chinese, Korean, Arabic, Hindi and many others.

The microblogging site is expected to go public, and touch $1 billion in ad revenues by next year. Analysts have criticized it for lacking a solid revenue generating system. But the emergence of mobile advertising and new methods to generate revenues have given the company a new confidence. It also renovated the platform recently to attract advertisers.

If you think you are being fooled on April 1, check it out here. Type in anything in “Twitter” column and see how it will appear in the free version “Twttr.”