Free location-aware todo list Is there a free location-aware todo list out there?

I need something, that: reminds me to buy milk, when I'm near to my favourite shop.
If you are already using Locale (which is not free), Astrid is a free task/todo list manager which can be configured to open a list of tasks with a specific tag.  Astrid also integrates with Remember the Milk.

You can configure the list to open by various Locale conditions, including location.

I use it to remind me of maintenance tasks when I'm near the hardware store.

Additionally, Remember the Milk is a free app which can trigger by location, but it does require a Pro subscription to Remember The Milk's website.