Ben & Jerry’s say donate your spare Twitter characters to a good cause

Put your unused Twitter characters to good use, says Ben & Jerry's.

Their clever take on donating your spare change to a good cause is helping to spread the word about fair trade.

"Every day, millions of Twitter characters go unused", says their campaign website. "That's not very fair. But now you can tweet as you normally would, and we'll turn any leftover characters into a message about Fair Trade. Now that's fair."

They've built a Twitter application to add a message and link about World Fair Trade Day (14 May) in the remaining character spaces of one’s tweets.

Here's my Tweet: