We have a little over 24 hours left in the America's Giving Challenge Contest (which ends January 30 at 3 p.m. EST) and as you can see from the leaderboard, the Sharing Foundation has the number 2 spot. But we're in a VERY tight race with numbers 3 and 4. To win the $50,000 we MUST be in the top 4. For the past three weeks we've been in either number 1 or 2 and it would be a real shame if we lost in the last 24 hours. Here's how you can help.

We need to have the most unique donors giving at least $10 to the cause. So the key here is to spread the word as widely as possible and get new people to donate. We only need $10 per person--the cost of a lunch.

• If you haven't given, please consider doing so by clicking on the widget in my right sidebar or by visiting my Sharing Foundation page.

• If you've already given, then I need your help in spreading the word. Send a link to the widget to everyone you know. If you're on Twittr, send out a tweet to your network. If you blog, please consider blogging about the fundraiser and asking your readers to donate. Share the link with people at work and with your family and friends. Get the link out to as many people as you can and ask them to give just $10.

We NEED your help to win the Challenge. If we do, it will mean almost $75,000 will go to the Sharing Foundation. That money can help support things like sending Pharoth to school and  using Web 2.0 to help educate a new generation of Cambodian children. If you love learning and want to bring that joy to other people, please help us in this last 24 hours. And to those of you who have already contributed, thank you so much!