FiveLimes, a Canadian startup that will begin inviting users very soon, is a social bookmarking site for eco-friendly products. The launch of yet another social bookmarking service is usually welcomed by a yawn from bloggers, but FiveLimes is unique enough to be interesting. The site is focused on environmentally responsible shopping - if you like your food organic and want the peace of mind that your shoes weren’t made in a sweatshop, FiveLimes is the place for you. Energy saving devices for your home, books on global warming and socially-responsible investing are also featured . Being a social network, there are profile pages, messaging, the ability to add friends and a comment section called the Green Wall.