I'm sorry about the poor usability. I've fixed it so that it doesn't make you log in repeatedly. And it's not supposed to "highlight" text. It's supposed to save the text so you reference it later, in the same way you'd "highlight" text on a piece of paper. I will work on adding the feature where it actually highlights the text.

I'm sorry you didn't enjoy it. I've fixed some bugs. The right-click menu is still broken...not sure what's wrong with that. In the meantime, I've changed the instruction text to not say that it does that. Thanks for your feedback!