Google Playing Pranks in April.

Check out these cool links...????
Google also plays such pranks upon people every year.

http://mail.google.com/mail/help/paper/index.html
http://www.google.com/tisp/
http://www.google.com/technology/pigeonrank.html
http://www.google.com/googlegulp/
http://www.google.com/jobs/lunar_job.html
http://www.google.com/mentalplex/

Every year on April 1 ...google plays tricks like those...not a new thing.
The 1GB Email Inbox was also launched on 1^stApril but it was true.