"Plant a photo, watch it grow." Photovine's tagline is just as catchy as the concept behind its launch -- a mobile app-based picture sharing service that groups images together using common photo-driven themes. These groupings, called vines, let you connect with strangers while sharing photos of everyday items that you wouldn't otherwise have any interest in photographing. You can have a vine focused on Swingline staplers, or magazine covers, or bottle caps. But as clever as this concept may seem, it's difficult to ignore Piictu, which budded several months before the Google app. It's certainly not uncommon for duplicate services to sprout, all based on the same underlying concept. B
