Go to any product page. Below the prices on the left, select "Want a lower price?". You can now specify which size and price you want.

So for example let's say you want the The North Face Venture Jacket and you want to know when you can get an XXL for less than $60.
1. Click on "Want a lower price"
2. Select XX-Large; go.
3. Type in 60; go.
Done. We'll email you as soon as that happens. No more "price watcher" emails for that x-small that you couldn't put on if the world depended on it.

You can also subscribe to your own personal RSS feed for all the products you are tracking and manage all your products from one screen.

Thank you to everyone whose been reminding me to actually develop this upgrade. Tell me if this doesn't cut it and I'll go back to the drawing board.

Thanks,
Mark