Same, I love the idea - but I cannot read the hiragana/katakana (heck even: はい hai yes <- would work well).
Edit: Decided to make my own firefox addon to do it, no worry about daily limits and I can simply update a json file with more words when I feel like I'm remembering things.
I've just whipped one together and am currently testing it out, I won't have time tonight but check back tomorrow and I should have it up by then. (I'll post a reply to my own comment here)
Edit: Decided to make my own firefox addon to do it, no worry about daily limits and I can simply update a json file with more words when I feel like I'm remembering things.