PLNyze is a tool for building Personal Learning Networks (PLNs). Is a microblogging tool to collect and store small pieces of knowledge (called cards) inside a topic folder. Also it let you share and favorite other users contributions and even edit those cards to make improvements. PLNyze was created specifically for build PNLs. It is not a general tool like Twitter or Facebook that could be adapted to build a sort of PLN.
See product booklet (eng) (spa) and slides (spa).