Last week, we wrote about our newest social media platforms -- Pinterest and Instagram -- and hinted at a few cool campaigns that would be coming down the pike.

Well, here's one of them:

In lieu of our regular "Weekly Window" post, which features a photo of the week, we are posting one piece of a new photo puzzle, featuring a shot from Uganda by the photographer Thomas White. The remaining seven puzzle pieces are on our Pinterest and Instagram accounts.

Collect all eight and re-pin (or post) them to your own Pinterest or Instagram account by the end of the week and we will send you an exclusive set of postcards featuring Five Talents photography.

We're using the photo puzzle, in part, to promote the ongoing Giving of Life campaign. Voting ends in just seven days!

If you haven't voted, please click here. It only takes a few seconds.

If you've already voted, register with Giving of Life and receive two more votes!

With your help, we can receive a $10,000 grant to reach even more of the world's poorest with our innovative microcredit and microsavings programs.

Thank you for your support!