I installed this on my browser bar and hasn't worked for cnn.com, highlighting specific text on cnn.com, medium.com. It worked on techcrunch...what about the HTML of the previous sites renders Squirt unusable?
I checked the console and it has to do with HTTPS. When I try to use Squirt on a HTTPS site I get this error in the console: "[blocked] The page at 'https://medium.com/p/cad4a8df73cf' was loaded over HTTPS, but ran insecure content from 'http://www.squirt.io/bm/squirt.js': this content should also be loaded over HTTPS."