Stumbled across this today as my co-worker and I were watching a Google Zombie challenge-- and it looks promising for easy sharing of URLs. ShoutKey was created by someone that wanted to quickly share a link to others collaborating in small groups rather than trying to get an email, or write out the long URL--ShoutKey gives you a QR code or a common word as a hyperlink to share with a set expiration time. Works pretty well. I could see the benefit of using it with students collaborating and needing to quickly share a cool find.
I work with teachers and students as an education technology specialist for middle school and serve as the TXDLA K-12 Board Member. My goal is to share innovative and useful information for other educators, as well as catalog my personal finds along the way!