I built and posted this on HN yesterday but no one seems to notice, so I thought "It's a lame idea".

Waking up this morning, I found out there're currently 1000+ users in less than 24 hours, and another Show HN is currently on first page of HN, so I decided to submit again :-P.

If you like what I did, I wouldn't mind an upvote =).

Any comment for feedback is greatly appreciated.