We're judging entries to our twitter competition on Wednesday, so if you want to win a free full registration to the Summit - get your tweet on!

 We've had some excellent entries in our twitter competition, where we've asked people to describe what Digital Earth means to them in 140 characters or less. By doing so, those that have entered already have given themselves the chance to win a free full registration to the 2012 Digital Earth Summit in Wellington next month. And entry is not just limited to people wanting to win a registration - if you've already registered and you compose the winning tweet, we'll refund your registration in full - simple.

So if you haven't already entered, use the #4des12 hashtag and tweet us your small but perfectly formed description of Digital Earth.

The winning tweet will be announced this Wednesday - will it be yours?