You've got it wrong, you don't read to learn vocab, you learn vocab to supplement reading experience. A bookmarklet that acts as mouse over dictionary, added w

You've got it wrong, you don't read to learn vocab, you learn vocab to supplement reading experience. A bookmarklet that acts as mouse over dictionary, added with a system that saves the whole context (and its distinguishing look) of whatever user is reading on browser, combined with a repetitive learning aid (like one you have as flashcard) is the right approach to assistive vocab learning.