Lately, I have been helping many Ning Creators prepare their networks for migration from Ning 2.0 to Ning 3.0. So a couple of weeks ago, I posted a useful Link Scrapper Tool that may come in handy when you are preparing for migration. The second tool that I created today is a Ning 3.0 responsive grid playground, which you can Fork and use yourself here for learning how responsive grids work and for making design decisions for your own network.