PicPlz has just posted on their blog that they are shutting down their operations.
The service would no longer be available after July 3. They would delete all user data including the shared photos on that day itself.
You have a month to backup all your content from their network.
The company is sadly not making it easy for you to backup your content. They are basically telling you to download each photo manually from their website!
On July 3, 2012, PicPlz will shut down permanently, and all photos and user data will be deleted. Until then, users may download their own photos by clicking on the download link next to each photo in their photo feed.