added: it seems the error may be with the framework "lmba" that you are using as the console reports these (other) issues at the lmba.io page (which also returns completely blank):

unreachable code after return statement[Learn More] index-LZXNJ15B.js:16:21954

TypeError: window.customElements is undefined[Learn More] index-LZXNJ15B.js:8:23994

But thanks for the idea, I might like to code something similar without using frameworks. I still miss the del.icio.us thingamajig sometimes