Facebook has a piece of FBML code that can be used on a custom tab and will show a special message only on April Fool’s Day.
While it isn’t April Fool’s Day yet, I thought I would write about it now so you had time to prepare. ;-)
This tag is wrapped around whatever content you want to display on April Fool’s Day and will only appear on April 1st.
Since the message will only appear on that one day, there isn’t a good way to test that it is working properly. Facebook does, however, have a test console that you can use to test your code before it goes live.
The fbml tag is:
<fb:is-it-april-fools>April Fools message here</fb:is-it-april-fools>
The part that says “April Fools message here” is where you add the content that you want displayed on April Fool’s Day.
Who knew that Facebook even had a sense of humor …?
photo credit: Stijn Vogels