Pretty nice. When testing this out I was getting multiple entries of the same domain. Once I added it to my landscape there would be a couple more in the list and I couldn't get rid of them. Very interesting tool.
To fix that issue (remove the duplicates), click twice on the keyword/checkbox at the top of the page beside "add search term." That will reload the list freshly from the server.
The issue comes from a lag in updating your selection of relevance on the server, most likely caused by the demand being placed on the server right now.
Seems to be quite popular right now. I really like the idea and the execution seems very solid from a UI standpoint. Best of luck. I will keep my eye on this to see where things go.
