Remember The Milk adds Siri support

Do changes on the RTM website get pushed to the iPhone reminders app?

this can work with Google Cal or many others as well.

This works with Things and The Hit List as well, using their built in iCal syncing.
It's very easy:
1. Create a new Reminder List in your iCloud account within iCloud (File>New Reminder List).
2. Set up Things or the Hit List to sync with iCal, specifically sync your new iCloud list to your INBOX.
3. Set up your default Reminders list on your iPhone to be this new INBOX list (Settings>Mail, Contacts, Calendars>Reminders Default List.

That's it. Now when you add a task to Siri, it will push it to iCal and your Things (or The Hit List) will auto sync to it! It will fall right into your inbox!!

Shouldn't this just be called "Remember the Milk and Reminders both have CalDAV Support" ?

Making people think that Siri integrations are really possible at this point, and more dangerously making apple think that simple account integrations like this are sufficient in lieu of an API, etc. is disingenuous. I mean sure, this works, but so does telling siri to calendar or remind you for something and watching it pop up in your linked google apps.

Unfortunately, they didn't really disclose the fact that you can only *add* to RTM with this method. Once you add the task it actually disappears from the iOS Reminders app and only appears in RTM's task list.

The problem with this solution/workaround is that you have to change your default calendar to the RTM one. That doesn't work if you have any other calendars you need to use.

Clever! I can't wait to see what other developers will come up with. Especially once the SDK is available to all. Siri is so convenient and far from being a fad or anything of the sort. Star Trek here we come. We already have the pads, communicators, now we need the computer and the replicators for food (we already have 3D printers).

Nice workaround, but it's worth noting that this is a one-way "sync" if it can be called that. Items get removed from the built-in Reminders app as soon as they get recorded by RTM, and you manage/edit them within the RTM app, not reminders. So what this means is that the "reminder" cannot take advantage of geofencing. But as I said initially, nice workaround!

I predict either iOS 5.1 or 5.2 will build in APIs to support Siri. It's just too good to pass up.

Does this also create a duplicate reminder in the reminders app? Aka I'll get two alerts when it comes due?