It works. It save what I've selected (selection + context menu) on their website page, where I have an account. (I'll try this extension with Chrome too); but the highlight doesn't appear on the source page, that's a pity. So you can save extracts, but you can't use it as an highlighter (at least it's my case). Edit: seeing the other review, it seems it's an old problem that hasn't been fixed yet. Please fix it to make your extension great again. And please add a link to go to the webapp page.