April 1

I will collect here April Fools' joke of web developers for 2011.
If you want to find them yourself - better not go to the post.


Specially I begin to collect links in advance so that those who wish can see everything on the sites live, and not study them by pictures. So far there is little material here, since some of them did not even come on April 1.

Yandex

The main page is localization into a random language (logo and search button).
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Metric - inactive pages are turned 180 degrees; come back if you move the mouse. You can also flip the page by clicking on the emoticon in the rainbow "cap".

In the search results, a button appeared “Show stupid results” and a ruler.
Moreover, foolish results suggest to look only for words with a neutral or positive emotional coloring. Cool!

The magic button "Zero Corks" appeared on the maps .

Google

Make a helvetica search query and Google will display the results in Comic Sans font.
Logical same ..?

Writing in standard phrases is now 83% easier.

Other sites

XKCD is now in 3D!

In order not to violate copyrights, the paintings on Artmeteo were transferred to the ASCII graphics mode:




On the Business Bomb turned the pictures (content, design elements and even some banners). Not impressive.

Gismeteo, finally, removed advertising from the site . Just kidding Just made a selection of logos, stylized as well-known brands. And here is one of them:



On Lurkmore now let by invitations .

They say youtube did something interesting, but I have everything intact.

At the Bashorge new buttons appeared voting. +100500

In Valuehost site fell . No, not in that sense.

Augmented Reality

AdBlock now protects not only from banners on the Internet, but also from billboards and TV ads.

For admins who want to make fun of users - April Fool's DNS-service .

Lebedev Studio

Not about web development, but still. Studio announced a leash and skates .


There are many other examples in the comments.