Tunerfish allows people to share with a single click what they are watching, on their social network(s) of choice in real time. Much like Twitter does for tweets, Tunerfish also displays which TV shows are trending among your friends (in the last hour, 24 hours, etc.), which gives users a way to discover shows they are not yet familiar with. (via Comcast’s Tunerfish Debuts To The Public With HBO’s True Blood Series)