If you have visited Gmail today (1st April), you must have noticed it. A page will appear which will look like a phishing attack. Something is looking very malicious and devilish about that always innocuous looking, simple, cute and plain Gmail interface. Check out for yourself -
Can you find out what is wrong about this page? No... Look closely, there is something missing. Isn't that thing conspicuous by its absence? Still wondering? No VOWELS are visible.
Gmail servers have stopped rendering all the vowels. Read more at the official Google blog here Today’s vowel outage.
Probably this is Google's prank on April Fool's Day ... :-)